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Senthamilselvan T, Nithiyanantham S, Kogulakrishnan K, Mahalakshmi S, Lakshmigandhan T, Mohan R, Gunasekaran B. Structural, magnetic, electric and electrochemical studies on zinc doped magnesium ferrite nano particles - Sol-gel method. Heliyon 2024; 10:e25511. [PMID: 38352742 PMCID: PMC10862666 DOI: 10.1016/j.heliyon.2024.e25511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Revised: 01/22/2024] [Accepted: 01/29/2024] [Indexed: 02/16/2024] Open
Abstract
The sol-gel process was used to prepare zinc doped magnesium ferrite (Mg1-xZnxFe2O4) nanopowders obtained from the nitrates of magnesium, zinc and ferrous is precursor materials, maintain the pH value which were then studied for sensing purposes. The crystallite size and phase of the ferrite samples studied by X-ray diffraction (XRD) revealed a pure spinel phase (Mg1-xZnxFe2O4) with a cubic spinel structure and higher crystallite size and etc. The functional groups with possible stretching analysis were taken from Fourier transform infrared spectroscopy (FTIR). The surface features and morphology and the purity of the samples were analysed through a Scanning electron microscope (SEM) and energy dispersive X-ray (EDAX) spectrum respectively. Through the vibrating sample magnetometer (VSM), the magnetic behaviour was studied from relevant parameters such as saturation magnetization (Ms), coercivity (Hc) and retentivity (Mr). The larger Ms in 0.8 has ferromagnetic nature were observed. The dielectric constants (ε'& ε''), dielectric loss (tan δ) with AC conductivity (σAC) determined through the LCR metre, and electrochemical behaviour of the samples were found through cyclic voltametery. The possible polarizations at lower and higher frequencies are studied The obtained data are extensively examined and understood.
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Affiliation(s)
- T. Senthamilselvan
- Department of Physics, Thiru.Vi.Ka Government Arts College Thiruvarur, Tamilnadu- 610003, India
| | - S. Nithiyanantham
- Department of Physics, Thiru.Vi.Ka Government Arts College Thiruvarur, Tamilnadu- 610003, India
| | - K. Kogulakrishnan
- Department of Physics, Thiru.Vi.Ka Government Arts College Thiruvarur, Tamilnadu- 610003, India
| | - S. Mahalakshmi
- Department of Physics, Ethiraj College for women Chennai, Tamilnadu -600008, India
| | - T. Lakshmigandhan
- Department of Physics, Thiru.Vi.Ka Government Arts College Thiruvarur, Tamilnadu- 610003, India
| | - R. Mohan
- Department of Chemistry, AMET University, Kanathur, Chennai - 603112, India
| | - B. Gunasekaran
- Department of Physics, SRM University, Kattankulathur, Chennai, 603203, India
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Damen P, van Rossum PSN, Chen Y, Liao Z, Hofstetter W, Hobbs BP, Mohan R, Lin SH. Comparing 90-Day Post-Operative Mortality after Neoadjuvant Proton-Based vs. Photon-Based Chemoradiotherapy for Esophageal Cancer. Int J Radiat Oncol Biol Phys 2023; 117:e346-e347. [PMID: 37785204 DOI: 10.1016/j.ijrobp.2023.06.2415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Standard of treatment for locally advanced esophageal cancer consists of chemoradiotherapy (CRT) followed by surgery. Evidence suggests that proton beam therapy (PBT) results in lower toxicity and fewer post-operative complications compared to photon-based radiotherapy (RT). Mortality in the first 90 days after surgery is a rare event occurring in 2-8% of patients, with higher reported rates (of up to 17%) in older patients. This 90-day mortality (90DM) rate is an important measure of post-operative (non-oncologic) mortality as a proxy of quality of care. We hypothesize that PBT could reduce the incidence of 90DM compared to photon-based RT. MATERIALS/METHODS From a single-center retrospectively acquired database patients with esophageal cancer treated with neoadjuvant CRT and esophagectomy in 1998-2022 were selected. Univariable logistic regression analyses were used to study the associations of RT modality and other patient- and treatment-related characteristics with 90DM. Subsequently, 3 separate methods were applied to adjust for confounding bias. These included multivariable logistic regression, 1:1 nearest-neighbor propensity score matching (PSM), and inverse probability of treatment weighting (IPTW). Finally, stratified analyses for patient groups aged ≥67 vs. <67 years were performed. RESULTS A total of 894 eligible patients were included (PBT, n = 202; photon-based RT, n = 692). PBT patients had a significantly higher age, better performance score, and a higher number of comorbidities. The 90DM rate was 5 (2.5%) in the PBT group and 29 (4.2%) in the photon-based RT group (p = 0.262). Significant univariable predictors of 90DM included higher age and tumor location. After multivariable adjustment, PBT vs. photon therapy was not significantly associated with 90DM (OR 0.49, 95% CI 0.18-1.31). The 90DM rates in the PSM cohort (n = 181 vs. n = 181) were 2.8% for PBT and 3.3% for photon-based RT (p = 0.379). The 90DM rates in the IPTW cohort were 2.8% for PBT and 4.1% for photon-based RT (p = 0.427). In the full cohort, stratified analysis for age groups revealed that in patients aged ≥67 years, PBT was associated with a decreased risk of 90DM compared to photon-based RT (1.3% vs. 8.8%; p = 0.046), which was not the case in patients aged <67 years. In the PSM cohort, a comparable (but non-significant) difference was observed in favor of PBT in patients aged ≥67 years (i.e., 1.5% vs. 7.5%; p = 0.099). Within-group analyses in the original cohort demonstrated that a higher age significantly increased the risk of 90DM within the photon-based RT group (8.8% vs. 2.7% for age ≥67 vs. <67 years; p = 0.001), but not within the PBT group (1.3% vs. 3.2%; p = 0.398). CONCLUSION Post-operative 90DM after esophagectomy for cancer was not significantly different between PBT and photon-based neoadjuvant CRT. However, among older patients we observed a signal that PBT may reduce the risk of 90DM. Higher age increased the risk of 90DM in patients who underwent photon-based RT, but not in patients who underwent PBT.
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Affiliation(s)
- P Damen
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX; Department of Radiation Oncology, The University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - P S N van Rossum
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX; Department of Radiation Oncology, Amsterdam University Medical Center, Amsterdam, The Netherlands
| | - Y Chen
- Department of Biostatistics and Data Science, University of Texas Health Science Center, Houston, TX
| | - Z Liao
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - W Hofstetter
- Department of Thoracic and Cardiovascular Surgery, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - B P Hobbs
- Department of Population Health, The University of Austin Dell Medical School, Austin, TX
| | - R Mohan
- Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - S H Lin
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
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Jain S, Mohanachandran J, Mohan R. Outcomes and complications of Titanium elastic nailing for forearm bones fracture in children: our experience in a district general hospital in the United Kingdom. Acta Orthop Belg 2023; 89:539-546. [PMID: 37935240 DOI: 10.52628/89.3.12032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
Abstract
Intramedullary Titanium elastic nailing (TENS) is successfully used for irreducible and displaced forearm bone fractures in children. The purpose of this study was to report the potential complications and functional outcomes associated with paediatric forearm fractures treated with TENS nails. We retrospectively reviewed 65 children with displaced forearm bone fractures treated by TENS nailing with a mean follow-up of 5.84 months (4-12). Data detailing patient demographics, fracture characteristics, associated fractures, injury surgery interval, grade of the operating surgeon, methods of fixation, time to union, the timing of removal of the nail, and complications were collected and analysed. The mean age in our study was 9.13 years. 92% had fractures of both radius and ulna, 83.3% had fixation of both bones, and 16.7% had single bone fixation only. Open reduction was required in 38.5% of cases. The average time to fracture union was 10.34 weeks (6-20). The average time of implant removal was 20.12 weeks (9-32). We observed an overall complication rate of 41.5%. We noted a higher (56% vs 32.5%, p=0.059) complication rate in open reduction cases. According to the Price criteria, we had excellent to good results in over 98% of patients despite a slightly higher complication rate. Titanium elastic nailing is a safe, reliable method of internal fixation for irreducible or unstable fractures of both bones of the forearm in children. Open reduction of fracture was associated with higher complications. Despite higher overall complications, we noted excellent functional results in most cases.
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Mohan R, Rakkappan C, Punitha N, Jayamoorthy K, Venkatesh G. Effect of MPA capping on the structural, optical and thermal properties of Zn 0.96Ni 0.04S nanoparticles. INORG NANO-MET CHEM 2023. [DOI: 10.1080/24701556.2023.2188453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
Affiliation(s)
- R. Mohan
- Department of Physics, S.S.Duraisamy Nadar Mariammal College, Kovilpatti, Tamil Nadu, India
| | - C. Rakkappan
- Department of Physics, Annamalai University, Chidambaram, Tamil Nadu, India
| | - N. Punitha
- Department of Physics, St.Joseph’s College of Engineering, Chennai, Tamil Nadu, India
| | - K. Jayamoorthy
- Department of Chemistry, St.Joseph’s College of Engineering, Chennai, Tamil Nadu, India
| | - G. Venkatesh
- Department of Chemistry, Muthayammal Engineering College (Autonomous), Rasipuram, Tamil Nadu, India
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Staunton DM, Mohan R, Carter JR, Highcock AJ. Total knee replacement survivorship by Design Philosophy: are we ignoring medial pivot design? Analysis based on the UK National Joint Registry. Acta Orthop Belg 2023; 89:37-43. [PMID: 37294983 DOI: 10.52628/89.1.9913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The UK National Joint Registry(NJR) has not reported total knee replacement (TKR) survivorship based on design phi- losophy alone, unlike its international counterparts. We report outcomes of implant survivorship based on design phi- losophy using data from NJR's 2020 annual report. All TKR implants with an identifiable design philosophy from NJR data were included. Cumulative revision data for cruciate-retaining(CR), posterior stabilised(PS), mobile-bearing(MB) design philosophies was derived from merged NJR data. Cumulative revision data for individual brands of implants with the medial pivot (MP) philosophy were used to calculate overall survivorship for this design philosophy. The all-cause revision was used as the endpoint and calculated to 15 years follow-up with Kaplan-Meier curves. 1,144,384 TKRs were included. CR is the most popular design philosophy (67.4%), followed by PS(23.1%), MB (6.9%) and least commonly MP (2.6%). MP and CR implants showed the best survivorship (95.7% and 95.6% respectively) at 15 years which is statistically significant at, and beyond, 10 years. Observed survivorship was lower at all time points with the PS and MB implants (94.5% for both designs at 15 years). While all design philosophies considered in this study survive well, CR and MP designs offer statistically superior survivorship at and beyond 10 years. MP design performs better than CR beyond 13 years yet, remain the least popular design philosophy used. Publishing data based on knee arthroplasty design phi- losophy would help surgeons when making decisions on implant choice.
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Mandal S, Gnana Sowndarya A A, Maheshkumar J, Banothu R, Lobo NP, Samanta D, Mohan R. Spectroscopic, thermal, and mechanical characterization of the polymeric fabrics used in extreme low-temperature protective garments. J INDIAN CHEM SOC 2023. [DOI: 10.1016/j.jics.2022.100839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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McCullum L, Xing S, Shin J, McNamara A, Alfonso C, Domal S, Withrow J, Bolch W, Hong T, Lin S, Mohan R, Paganetti H, Grassberger C. High Dose Rate and Fractionation to Reduce Radiation-Induced Lymphopenia: In Vivo Derivation of Lymphocyte Radiosensitivity Using Patient-Specific Blood Flow Simulations. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.1797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Bronk J, Bronk L, Singh S, Guan F, Wang X, Zhu X, Schueler E, Jiang D, Mohan R, Koong A, Lang F, Grosshans D. Enhanced Radiation-Sparing Effects of Ultra-High Dose Rate Proton Radiation (FLASH-RT) in a Human Induced Pluripotent Stem Cell-Derived Cerebral Organoid Model. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Kakkar N, Khatti N, Vasishta R, Mohan R. A comparison of morphologic grading system based on architectural patterns and WHO/ ISUP grading system in clear cell renal cell carcinomas. EUR UROL SUPPL 2022. [DOI: 10.1016/s2666-1683(22)02539-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Musunuru H, Keller A, Lin S, Mohan R, Ellsworth S. Modeling Potential Lymphocyte-Sparing Effect of Involved-Field Radiotherapy in Rectal Cancer. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Balakrishnan A, Jah A, Lesurtel M, Andersson B, Gibbs P, Harper SJF, Huguet EL, Kosmoliaptsis V, Liau SS, Praseedom RK, Ramia JM, Branes A, Lendoire J, Maithel S, Serrablo A, Achalandabaso M, Adham M, Ahmet A, Al-Sarireh B, Albiol Quer M, Alconchel F, Alejandro R, Alsammani M, Alseidi A, Anand A, Anselmo A, Antonakis P, Arabadzhieva E, de Aretxabala X, Aroori S, Ashley S, Ausania F, Banerjee A, Barabino M, Bartlett A, Bartsch F, Belli A, Beristain-Hernandez J, Berrevoet F, Bhatti A, Bhojwani R, Bjornsson B, Blaz T, Byrne M, Calvo M, Castellanos J, Castro M, Cavallucci D, Chang D, Christodoulis G, Ciacio O, Clavien P, Coker A, Conde-Rodriguez M, D'Amico F, D'Hondt M, Daams F, Dasari B, De Beillis M, de Meijer V, Dede K, Deiro G, Delgado F, Desai G, Di Gioia A, Di Martino M, Dixon M, Dorovinis P, Dumitrascu T, Ebata T, Eilard M, Erdmann J, Erkan M, Famularo S, Felli E, Fergadi M, Fernandez G, Fox A, Galodha S, Galun D, Ganandha S, Garcia R, Gemenetzis G, Giannone F, Gil L, Giorgakis E, Giovinazzo F, Giuffrida M, Giuliani T, Giuliante F, Gkekas I, Goel M, Goh B, Gomes A, Gruenberger T, Guevara O, Gulla A, Gupta A, Gupta R, Hakeem A, Hamid H, Heinrich S, Helton S, Heumann A, Higuchi R, Hughes D, Inarejos B, Ivanecz A, Iwao Y, Iype S, Jaen I, Jie M, Jones R, Kacirek K, Kalayarasan R, Kaldarov A, Kaman L, Kanhere H, Kapoor V, Karanicolas P, Karayiannakis A, Kausar A, Khan Z, Kim DS, Klose J, Knowles B, Koh P, Kolodziejczyk P, Komorowski A, Koong J, Kozyrin I, Krishna A, Kron P, Kumar N, van Laarhoven S, Lakhey P, Lanari J, Laurenzi A, Leow V, Limbu Y, Liu YB, Lob S, Lolis E, Lopez-Lopez V, Lozano R, Lundgren L, Machairas M, Magouliotis D, Mahamid A, Malde D, Malek A, Malik H, Malleo G, Marino M, Mayo S, Mazzola M, Memeo R, Menon K, Menzulin R, Mohan R, Morgul H, Moris D, Mulita F, Muttillo E, Nahm C, Nandasena M, Nashidengo P, Nickkholgh A, Nikov A, Noel C, O'Reilly D, O'Rourke T, Ohtsuka M, Omoshoro-Jones J, Pandanaboyana S, Pararas N, Patel R, Patkar S, Peng J, Perfecto A, Perinel J, Perivoliotis K, Perra T, Phan M, Piccolo G, Porcu A, Primavesi F, Primrose J, Pueyo-Periz E, Radenkovic D, Rammohan A, Rowcroft A, Sakata J, Saladino E, Schena C, Scholer A, Schwarz C, Serrano P, Silva M, Soreide K, Sparrelid E, Stattner S, Sturesson C, Sugiura T, Sumo M, Sutcliffe R, Teh C, Teo J, Tepetes K, Thapa P, Thepbunchonchai A, Torres J, Torres O, Torzili G, Tovikkai C, Troncoso A, Tsoulfas G, Tuzuher A, Tzimas G, Umar G, Urbani L, Vanagas T, Varga, Velayutham V, Vigano L, Wakai T, Yang Z, Yip V, Zacharoulis D, Zakharov E, Zimmitti G. Heterogeneity of management practices surrounding operable gallbladder cancer - results of the OMEGA-S international HPB surgical survey. HPB (Oxford) 2022; 24:2006-2012. [PMID: 35922277 DOI: 10.1016/j.hpb.2022.06.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 06/22/2022] [Accepted: 06/28/2022] [Indexed: 12/12/2022]
Abstract
BACKGROUND Gallbladder cancer (GBC) is an aggressive, uncommon malignancy, with variation in operative approaches adopted across centres and few large-scale studies to guide practice. We aimed to identify the extent of heterogeneity in GBC internationally to better inform the need for future multicentre studies. METHODS A 34-question online survey was disseminated to members of the European-African Hepatopancreatobiliary Association (EAHPBA), American Hepatopancreatobiliary Association (AHPBA) and Asia-Pacific Hepatopancreatobiliary Association (A-PHPBA) regarding practices around diagnostic workup, operative approach, utilization of neoadjuvant and adjuvant therapies and surveillance strategies. RESULTS Two hundred and three surgeons responded from 51 countries. High liver resection volume units (>50 resections/year) organised HPB multidisciplinary team discussion of GBCs more commonly than those with low volumes (p < 0.0001). Management practices exhibited areas of heterogeneity, particularly around operative extent. Contrary to consensus guidelines, anatomical liver resections were favoured over non-anatomical resections for T3 tumours and above, lymphadenectomy extent was lower than recommended, and a minority of respondents still routinely excised the common bile duct or port sites. CONCLUSION Our findings suggest some similarities in the management of GBC internationally, but also specific areas of practice which differed from published guidelines. Transcontinental collaborative studies on GBC are necessary to establish evidence-based practice to minimise variation and optimise outcomes.
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Affiliation(s)
- Anita Balakrishnan
- Department of HPB Surgery, Cambridge University Hospitals NHS Foundation Trust, Hills Road, Cambridge, CB2 0QQ, United Kingdom.
| | - Asif Jah
- Department of HPB Surgery, Cambridge University Hospitals NHS Foundation Trust, Hills Road, Cambridge, CB2 0QQ, United Kingdom
| | - Mickael Lesurtel
- Department of HPB Surgery and Liver Transplantation, Beaujon Hospital, University of Paris Cité, 100 Bd du Général Leclerc, 92110, Clichy, France
| | - Bodil Andersson
- Department of Surgery, Lund University, Skane University Hospital, Lund, Sweden
| | - Paul Gibbs
- Department of HPB Surgery, Cambridge University Hospitals NHS Foundation Trust, Hills Road, Cambridge, CB2 0QQ, United Kingdom
| | - Simon J F Harper
- Department of HPB Surgery, Cambridge University Hospitals NHS Foundation Trust, Hills Road, Cambridge, CB2 0QQ, United Kingdom
| | - Emmanuel L Huguet
- Department of HPB Surgery, Cambridge University Hospitals NHS Foundation Trust, Hills Road, Cambridge, CB2 0QQ, United Kingdom
| | - Vasilis Kosmoliaptsis
- Department of HPB Surgery, Cambridge University Hospitals NHS Foundation Trust, Hills Road, Cambridge, CB2 0QQ, United Kingdom
| | - Siong S Liau
- Department of HPB Surgery, Cambridge University Hospitals NHS Foundation Trust, Hills Road, Cambridge, CB2 0QQ, United Kingdom
| | - Raaj K Praseedom
- Department of HPB Surgery, Cambridge University Hospitals NHS Foundation Trust, Hills Road, Cambridge, CB2 0QQ, United Kingdom
| | - Jose M Ramia
- Department of Surgery, Hospital General Universitario de Alicante, Avenida Pintor Baeza, 12 03010 Alicante, Spain
| | - Alejandro Branes
- Department of HPB Surgery, Hospital Sotero del Rio, Av. Concha y Toro 3459, Puente Alto, Región Metropolitana, Chile
| | - Javier Lendoire
- Department of Surgery, University of Buenos Aires, Hospital Dr Cosme Argerich, Buenos Aires, Argentina
| | - Shishir Maithel
- Department of Surgery, Emory University School of Medicine, Atlanta, GA, 30322 USA
| | - Alejandro Serrablo
- Department of HPB Surgery, Miguel Servet University Hospital, Zaragoza, Spain
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He Y, Adair A, Cazoulat G, Yepes P, Titt U, Wu C, Mirkovic D, Balter P, Pollard J, Cardenas C, Liao Z, Mohan R, Brock K. Modeling Variable Proton Relative Biological Effectiveness (RBE) Using Voxel-Level Image Density Change for Non-Small Cell Lung Cancer (NSCLC) Patients Treated with Passive Scattering Proton Therapy (PSPT) or Intensity Modulated Photon Therapy (IMRT). Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.1848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Mandal S, Suresh S, Priya N, Banothu R, Mohan R, Sreeram KJ. Phthalate migration and its effects on poly(vinyl chloride)-based footwear: pathways, influence of environmental conditions, and the possibility of human exposure. Environ Sci Process Impacts 2022; 24:1844-1854. [PMID: 36107023 DOI: 10.1039/d2em00059h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The study of phthalate migration in footwear is important from an environmental viewpoint and the consumer health perspective as it remains in direct contact with the user for a long time. In this research article, the migration of phthalate, specifically di-(2-ethylhexyl) phthalate (DEHP), from the poly(vinyl chloride) (PVC) shoe sole to the attached leather insole has been studied for six months under different environmental conditions. After one month, the DEHP concentration in the PVC sole decreased by 45-58%, and that in the leather insole increased from 0.35 mg g-1 to 38-58 mg g-1. After six months, about 90% of the DEHP has been lost from the PVC sole, and that in the leather insole reached close to its initial value (value before the experiment). The migration rate depends on the environmental conditions and the presence of phthalate soluble solvents in the sole-adhesive-insole system of the footwear. The influence of DEHP migration on the physicochemical characteristics of the PVC sole and leather insole has been studied by Fourier transform infrared spectroscopy-attenuated total reflectance (FTIR-ATR), thermo-gravimetric analysis (TGA), and differential scanning calorimetry (DSC). The migration and emission pathways of DEHP, the influence of environmental conditions, and the possibility of human exposure to phthalate through footwear are discussed.
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Affiliation(s)
- Sujata Mandal
- CLRI Center for Analysis, Testing, Evaluation and Reporting Services (CATERS), CSIR-Central Leather Research Institute (CLRI), Chennai-600020, India.
| | - S Suresh
- CLRI Center for Analysis, Testing, Evaluation and Reporting Services (CATERS), CSIR-Central Leather Research Institute (CLRI), Chennai-600020, India.
| | - N Priya
- CLRI Center for Analysis, Testing, Evaluation and Reporting Services (CATERS), CSIR-Central Leather Research Institute (CLRI), Chennai-600020, India.
| | - Ravi Banothu
- CLRI Center for Analysis, Testing, Evaluation and Reporting Services (CATERS), CSIR-Central Leather Research Institute (CLRI), Chennai-600020, India.
| | - R Mohan
- CLRI Center for Analysis, Testing, Evaluation and Reporting Services (CATERS), CSIR-Central Leather Research Institute (CLRI), Chennai-600020, India.
| | - K J Sreeram
- CLRI Center for Analysis, Testing, Evaluation and Reporting Services (CATERS), CSIR-Central Leather Research Institute (CLRI), Chennai-600020, India.
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Joshi V, Shrikhande S, Harish R, Giridharan A, Mohan R. Computational Fluid Dynamics Simulation on Thermal Performance of Al/Al 2O 3/SWCNT Nanocoolants for Turning Operations. Nanomaterials (Basel) 2022; 12:3508. [PMID: 36234636 PMCID: PMC9565317 DOI: 10.3390/nano12193508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 09/29/2022] [Accepted: 10/01/2022] [Indexed: 06/16/2023]
Abstract
The objective of this study is to numerically investigate the thermal performance of cutting fluids dispersed with nanoparticles for effective heat removal during turning operations. The simulations are performed using Ansys Fluent software, and the problem is modelled as a three-dimensional turbulent incompressible single-phase flow. The computational domain consists of a heated cutting tool and work piece, and nanocoolants are sprayed from a nozzle located above the machining zone. The nanocoolants are prepared by mixing mineral oil with nanoparticles of Al2O3 (Aluminium Oxide), Al (Aluminium) and SWCNT (Single Walled Carbon Nanotube). The heat transfer performances of different nanocoolants are compared by varying the nanoparticle volume fraction (φ) and coolant velocity (Uc) in the range of 2% ≤ φ ≤ 8% and 1 m/s ≤ Uc ≤ 15 m/s, respectively. The results indicated a drastic drop in the cutting tool temperature with an increase in the volume fraction of dispersed nanoparticles and coolant velocity. The increase in volume fraction decreases the average cutting tool temperature by 25.65% and also enhances the average heat transfer rate by 25.43%. It is additionally observed that SWCNT nanocoolants exhibited a superior thermal performance and heat removal rate compared with Al and Al2O3 nanocoolants. The analysed numerical results are validated and are in good accordance with the benchmark results validated from literature.
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Affiliation(s)
| | | | | | | | - R. Mohan
- Correspondence: ; Tel.: +91-44-39931639; Fax: +91-44-39932555
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Monti S, Cella L, Xu T, Mohan R, Liao Z, Palma G. MO-0875 Thoracic regions contributing to radiation induced lymphocyte depletion in lung cancer patients. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)02441-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Palma G, Monti S, Xu T, Mohan R, Liao Z, Cella L. MO-0881 Dose patterns associated to radiation induced esophagitis in locally advanced NSCLC patients. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)02447-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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17
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Mohan R. SP-0984 Prediction of radiotherapy-induced lymphopenia. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)04091-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Skaarup M, Lundemann M, Darkner S, Jørgensen M, Marner L, Mirkovic D, Grosshans D, Peeler C, Mohan R, Vogelius I, Appelt A. PO-1757 A framework for in-vivo, voxel-based assessment of radiation response through multimodal imaging. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)03721-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Panimalar S, Kamatchi T, Kumaresan P, Nithiyanantham S, Mohan R. Second Harmonic Generation Studies on Dyes (Methyl Orange, Methyl Red) Doped Thiourea Barium Chloride (TBC) Crystals for Nonlinear Optical Applications. Chemistry Africa 2022. [DOI: 10.1007/s42250-022-00321-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Cella L, Monti S, Xu T, Durante M, Liuzzi R, Mohan R, Liao Z, Palma G. Spatial dose patterns associated to cardiac toxicity and survival in patients treated with photons and protons for lung cancer. Phys Med 2021. [DOI: 10.1016/s1120-1797(22)00130-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Srivastava R, Mohan R, Saravana Balaji MD, Vijay VK, Srinivasan S, Navarasu M. A Randomized Controlled Trial on a Minimally Invasive Microsurgical Versus Conventional Procedure for the Management of Localized Gingival Recession in Esthetic Zone using Alloderm. J Pharm Bioallied Sci 2021; 13:S476-S483. [PMID: 34447138 PMCID: PMC8375812 DOI: 10.4103/jpbs.jpbs_756_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 11/22/2020] [Accepted: 11/23/2020] [Indexed: 11/24/2022] Open
Abstract
Background: Microsurgical technique is a recent advancement in periodontal plastic surgery, which improves the predictability of periodontal procedures, providing better esthetic results with minimal postoperative discomfort. Alloderm is an alternate to connective tissue grafts, which has been successfully used for root coverage. The present study aims at Comparative assessment of Micro and Conventional surgical techniques for root coverage using coronally positioned flap (CPF) with Alloderm. Materials and Methods: Twenty sites with Miller's Class I or II gingival recession defects were selected; sites were randomly divided into control and test groups. Test sites were treated with CPF and acellular dermal matrix (ADM) using Microsurgery and control sites were treated with CPF and ADM using conventional method. Results: Conventional and Microsurgical procedures for root coverage showed a statistically significant difference in all clinical parameters from baseline to 3 and 6 months (P < 0.01). The microsurgical technique demonstrated a significant difference in ultrasonographic thickness of gingiva (P < 0.003) and patient satisfaction score (P < 0.005). Conclusion: Microsurgical procedure for root coverage was found to be superior to the conventional macrosurgical approach under magnification. Microsurgical sites healed faster with neovascularization demonstrated on ultrasonographic evaluation with improved gingival thickness and patient satisfaction scores.
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Affiliation(s)
- Robin Srivastava
- Consulting Periodontist, Savitri Hospital, Jhansi, Uttar Pradesh, India
| | - Ranjana Mohan
- Department of Periodontology, RVS Dental College and Hospital, Coimbatore, Tamil Nadu, India
| | - M D Saravana Balaji
- Department of Periodontology, RVS Dental College and Hospital, Coimbatore, Tamil Nadu, India
| | - V K Vijay
- Department of Periodontology, Best Dental College and Hospital, Madurai, Tamil Nadu, India
| | - S Srinivasan
- Department of Periodontology, Rajah Muthaiah Dental College and Hospital, Chidambaram, Tamil Nadu, India
| | - M Navarasu
- Department of Periodontics, Best Dental College and Hospital, Madurai, Tamil Nadu, India
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22
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Palma G, Monti S, Pacelli R, Liao Z, Deasy J, Mohan R, Cella L. OC-0641 Radiation pneumonitis in thoracic cancer patients: multi-center voxel-based analysis. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)06997-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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23
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Monti S, Cella L, Xu T, Mohan R, Liao Z, Palma G. OC-0637 Thoracic dose patterns associated with radiation induced lymphopenia in patients treated for NSCLC. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)06993-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Mohan R, Rakkappan C, Punitha N, Jayamoorthy K, Dhanalekshmi KI. Effect of polyethylene glycol capping on structural, optical and thermal properties of ZnS:Ni 2+ nanoparticles. INORG NANO-MET CHEM 2021. [DOI: 10.1080/24701556.2021.1952241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- R. Mohan
- Department of Physics, S.S. Duraisamy Nadar Mariammal College, Kovilpatti, Tamil Nadu, India
| | - C. Rakkappan
- Department of Physics, Annamalai University, Tamil Nadu, India
| | - N. Punitha
- Department of Physics, St. Joseph’s College of Engineering, Chennai, Tamil Nadu, India
| | - K. Jayamoorthy
- Department of Chemistry, St. Joseph’s College of Engineering, Chennai, Tamil Nadu, India
| | - K. I. Dhanalekshmi
- School of Mechanical Engineering, Beijing Institute of Technology, Beijing, China
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Mark R, Mohan R, Gundappa M, Balaji MDS, Vijay VK, Umayal M. Comparative Evaluation of Periodontal Osseous Defects Using Direct Digital Radiography and Cone-Beam Computed Tomography. J Pharm Bioallied Sci 2021; 13:S306-S311. [PMID: 34447099 PMCID: PMC8375921 DOI: 10.4103/jpbs.jpbs_804_20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Accepted: 12/09/2020] [Indexed: 11/26/2022] Open
Abstract
OBJECTIVES To evaluate and compare the accuracy of Direct Digital Radiography (DDR) and cone-beam computed tomography (CBCT) in determination and diagnosis of periodontal osseous defects. METHODS A nonrandomized in vivo study was conducted to compare the two imaging modalities, DDR and CBCT, for the diagnosis of periodontal osseous defects. Comparison was made between the linear measurements of DDR and CBCT images with the actual measurements of various osseous defects during surgical exposure (Gold standard). RESULTS The results of the present study demonstrated the difference in the mean values of the DDR and surgical exposure measurements of periodontal osseous defects, whereas comparable mean values were found between the CBCT and surgical exposure measurements, with no statistically significant difference (P > 0.05) being found between each modality. CONCLUSION CBCT proved to be an indispensable imaging tool in detecting and quantifying periodontal defects and furcation involvement more precisely and could provide additional benefits over the traditional radiography for clinical and postsurgical evaluation.
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Affiliation(s)
- Ruhi Mark
- Department of Periodontology, Christian Dental College and Research Centre, CMC Ludhiana, Punjab, India
| | - Ranjana Mohan
- Department of Periodontology, RVS Dental College and Hospital, Coimbatore, Tamil Nadu, India
| | - M Gundappa
- Department of Conservative Dentistry and Endodontics, RVS Dental College and Hospital, Coimbatore, Tamil Nadu, India
| | - M. D. Saravana Balaji
- Department of Periodontology, RVS Dental College and Hospital, Coimbatore, Tamil Nadu, India
| | - V. K. Vijay
- Department of Periodontology Best Dental College and Hospital, Madurai, Tamil Nadu, India
| | - M. Umayal
- Department of Periodontology Best Dental College and Hospital, Madurai, Tamil Nadu, India
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Loitongbam M, Mohan R, Chowdhary Z, Mehrotra S. Comparative evaluation of tooth surface roughness caused by three different powered toothbrushes and a novel manual toothbrush -An SEM and AFM study. Indian J Dent Res 2021; 31:743-751. [PMID: 33433513 DOI: 10.4103/ijdr.ijdr_163_18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Background Toothbrush is the most frequently used tool for mechanical plaque control. Variety of manual and powered toothbrushes are available in the market, and it is often a dilemma for a common man that which one to choose among the wide range. Thus, the purpose of the present study was to evaluate and compare the tooth surface roughness caused by three different powered toothbrushes. Method In total, 160 samples comprising of 80 enamel and cementum each were equally and randomly divided into four groups: Group 1 multi-directional powered toothbrushing; Group 2 oscillating/rotating/pulsating powered tooth brushing; Group 3 sonic powered tooth brushing; and Group 4 manual tooth brushing. They were further sub-divided equally into Control and Test. The Test samples were brushed for 2 min every day for a period of 1 month. The prepared samples were evaluated for surface roughness using scanning electron microscope at 1000 × magnification and atomic force microscope at the nanoscale. Result A statistically significant difference was seen in the enamel and cementum roughness between multi-directional tooth brush group and sonic (P = 0.00); multi-directional tooth brush group and manual tooth brush group (P = 0.00); oscillating tooth brush group and sonic group (P = 0.00); oscillating tooth brush group and manual tooth brush group (P = 0.00); and sonic group and manual tooth brush group (P = 0.00). Conclusion The surface microroughness caused by tooth brushing was found to be least using multi-directional and oscillating/rotational/pulsating powered toothbrush, followed by sonic powered toothbrush and maximum in manual toothbrush.
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Affiliation(s)
- Monika Loitongbam
- Department of Periodontology, Jawaharlal Nehru Institute of Medical Sciences Dental College, Imphal, Manipur, India
| | - Ranjana Mohan
- Department of Periodontology, RVS Dental College and Hospital, Coimbatore, India
| | - Zoya Chowdhary
- Department of Periodontology, Indira Gandhi Government Dental College, Jammu, India
| | - Shalabh Mehrotra
- Department of Periodontolgy, Teerthankar Mahaveer Dental College and Research Centre, Moradabad, Uttar Pradesh, India
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Rosa F, Busato S, Avaroma FC, Mohan R, Carpinelli N, Bionaz M, Osorio JS. Short communication: Molecular markers for epithelial cells across gastrointestinal tissues and fecal RNA in preweaning dairy calves. J Dairy Sci 2020; 104:1175-1182. [PMID: 33162086 DOI: 10.3168/jds.2020-18955] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 08/14/2020] [Indexed: 11/19/2022]
Abstract
The objective of this study was to compare the transcription of gene markers for gastrointestinal (GI) epithelial cells, including fatty acid binding protein 2 (FABP2) and cytokeratin 8 (KRT8), and tight junction complex genes (TJP1, CLDN1, CLDN4) in fecal RNA against several GI tract tissue sections in dairy calves. Eight healthy Jersey calves were euthanized at 5 wk of age, and postmortem samples were collected from rumen, duodenum, jejunum, ileum, large intestine, cecum, and feces for total RNA isolation. Tissues and fecal samples were immediately frozen in liquid nitrogen until RNA isolation. A real-time quantitative PCR analysis was performed using a single standard curve composited of equal amounts of all samples, including cDNA from fecal and GI tract tissues. The mRNA expression of the tight junctions TJP1, CLDN1, and CLDN4 was greater in fecal RNA compared with lower GI tract tissues (i.e., duodenum, jejunum, ileum, large intestine, and cecum). Similar to fecal RNA, rumen tissue had greater expression of tight junctions CLDN1 and CLDN4 than lower GI tract tissues. Similarly, rumen tissue had greater expression of TPJ1 than all lower GI tract tissues except duodenum. The expression of TJP1 and CLDN4 was greater in fecal RNA than in rumen tissue; in contrast, CLDN1 mRNA expression was greater in rumen tissue than in the fecal RNA. The expression of FABP2 was greater in duodenum in comparison to all tissue except ileum. The mRNA expression of FABP2 in fecal samples was similar to jejunum and ileum. The expression of KRT8 in fecal samples was similar to duodenum, large intestine, and cecum. The fecal RNA had a greater expression of KRT8 in comparison to jejunum and ileum. The rumen tissue had the lowest mRNA expression of KRT8. The expression levels of FABP2, KRT8, and tight junction genes observed in fecal transcripts suggest that a considerable amount of RNA derived from GI tract epithelial cells can be detected in fecal RNA, which is in agreement with previous data in neonatal dairy calves and other biological models including humans, rodents, and primates. The greater expression of tight junctions in fecal RNA in comparison to sections of the low GI remains to be understood, and due to the importance of tight junctions in GI physiology, further clarification of this effect is warranted. The similarities in mRNA expression of FABP2 and KRT8 between fecal RNA and intestinal sections add up to the accumulating evidence that fecal RNA can be used to investigate molecular alterations in the GI tract of neonatal dairy calves. Further research in this area should include high-throughput transcriptomic analysis via RNA-seq to uncover novel molecular markers for specific sections of the GI tract of neonates.
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Affiliation(s)
- F Rosa
- Dairy and Food Science Department, South Dakota State University, Brookings, 57007
| | - S Busato
- Department of Animal and Rangeland Sciences, Oregon State University, Corvallis, 97331
| | - F C Avaroma
- Department of Animal and Rangeland Sciences, Oregon State University, Corvallis, 97331
| | - R Mohan
- Dairy and Food Science Department, South Dakota State University, Brookings, 57007
| | - N Carpinelli
- Dairy and Food Science Department, South Dakota State University, Brookings, 57007
| | - M Bionaz
- Department of Animal and Rangeland Sciences, Oregon State University, Corvallis, 97331
| | - J S Osorio
- Dairy and Food Science Department, South Dakota State University, Brookings, 57007.
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Palma G, Monti S, Stanzione A, Xu T, Durante M, Mohan R, Liao Z, Cella L. Disentangling Contributions from Heart and Lung Anatomical Substructures to Radiation Induced Toxicities: Characterization of Spatial Properties of Dosimetric Data for Voxel-Based Analyses. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Cella L, Monti S, Xu T, Liuzzi R, Durante M, Mohan R, Liao Z, Palma G. Pericardial Effusion and Mortality in Patients Treated with Photons and Protons for Locally Advanced Non-small-cell lung Cancer: The Voxel-based Perspective. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.2126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Engeseth G, He R, Mirkovic D, Yepes P, Stokkevag C, Pettersen H, Wahid K, Adair A, Wu R, Zhang X, Mohamed A, Fuller C, Frank S, Mohan R, Gunn G. PD-0178: NTCP model development and comparison for brain image changes after IMPT for head and neck cancer. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)00202-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Vassiliev O, Wang H, Peterson C, Chang J, Mohan R. Improving the Therapeutic Ratio for Lung SBRT Through the Use of Flattening Filter-Free Beams. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Palma G, Monti S, Conson M, Xu T, Hahn S, Durante M, Mohan R, Liao Z, Cella L. PH-0285: NTCP models for severe radiation induced dermatitis after thoracic radiation therapy. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)00309-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Toussaint L, Eskildsen S, Casares-Magaz O, Stokkevåg C, Lassen-Ramshad Y, Hasle H, Tofting-Olesen K, Grosshans D, Mohan R, Høyer M, Muren L. PO-1721: A voxel-based method to quantify longitudinal MRI changes after pediatric brain irradiation. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01739-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Balakrishnan KR, Sureshrao KG, Ravikumar R, Muralikrishna T, Ganapathy Subramaniam K, Mohan R, Ajay A, Ramasubramanian K, Jagdish D, Veena R. Medium term results following heart transplantation for end stage heart failure: A single center experience of 257 patients. Indian Heart J 2020; 72:524-534. [PMID: 33357640 PMCID: PMC7772589 DOI: 10.1016/j.ihj.2020.09.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 07/22/2020] [Accepted: 09/10/2020] [Indexed: 10/27/2022] Open
Abstract
OBJECTIVE End stage heart failure is a lethal disease with a dismal 5 year survival. Heart transplantation has proven to be a highly effective modality of treatment in appropriately selected group of such patients. This is a retrospective analysis of medium term outcomes of heart transplantation in the setting of a private health facility in India. The objective of this study was two fold. METHODS The outcome of 257 heart transplants done at a single centre from October 2012 to October 2019 was analyzed. Patients with combined Heart and lung transplants and those whose complete medical records were unavailable were excluded from the study. Survival was tracked at 60 days, 90 days, one year and beyond for a maximum of 7 years. Preoperative patient risk profiles were characterized on the basis of INTERMACS category. RESULTS There were 176 male and 81 female patients. The age range was from 8 months to 78 years with a mean of 32.9 years. Survival at 2 months was 87%, at 90 days was 83%, at one year was 81%, 2 years was 75%, at 3 years was 72% and at 5 years and beyond was 62% for the whole series. Strong predictors of 90 day mortality included INTERMACS category (odd's ratio 0.289, p = 0.000) and creatinine more than 1.5 mg/dl (odd's ratio 2.48, p = 0.056). Recipient pulmonary vascular resistance and donor organ ischemic times were not found to be statistically significant factors affecting outcome. Medium term survival was influenced by INTERMACS category (Hazard ratio > 3 for INTERMACS category 1 compared to INTERMACS 4 or 5, p < 0.0001) and creatinine > 1.5 mg/dl (Hazard ratio 2.15, p = 0.003). This effect of creatinine was related to the age of the recipient. Hazard ratio 1.4, p = 0.524 if age <30 and Hazard ratio 4.78, p = 0.006, if age was >50. CONCLUSION Satisfactory medium term outcome is possible after heart transplantation even in resource constrained environment of a developing country.
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Affiliation(s)
- K R Balakrishnan
- Department of Heart and Lung Transplantation, MGM Hospital, 72, Nelson Manickam Road, Aminjikarai, Chennai, 600029, India
| | - K G Sureshrao
- Department of Heart and Lung Transplantation, MGM Hospital, 72, Nelson Manickam Road, Aminjikarai, Chennai, 600029, India
| | - R Ravikumar
- Department of Heart and Lung Transplantation, MGM Hospital, 72, Nelson Manickam Road, Aminjikarai, Chennai, 600029, India.
| | - T Muralikrishna
- Department of Heart and Lung Transplantation, MGM Hospital, 72, Nelson Manickam Road, Aminjikarai, Chennai, 600029, India
| | - K Ganapathy Subramaniam
- Department of Heart and Lung Transplantation, MGM Hospital, 72, Nelson Manickam Road, Aminjikarai, Chennai, 600029, India
| | - R Mohan
- Department of Heart and Lung Transplantation, MGM Hospital, 72, Nelson Manickam Road, Aminjikarai, Chennai, 600029, India
| | - A Ajay
- Department of Heart and Lung Transplantation, MGM Hospital, 72, Nelson Manickam Road, Aminjikarai, Chennai, 600029, India
| | - K Ramasubramanian
- Department of Heart and Lung Transplantation, MGM Hospital, 72, Nelson Manickam Road, Aminjikarai, Chennai, 600029, India
| | - D Jagdish
- Department of Heart and Lung Transplantation, MGM Hospital, 72, Nelson Manickam Road, Aminjikarai, Chennai, 600029, India
| | - R Veena
- Department of Heart and Lung Transplantation, MGM Hospital, 72, Nelson Manickam Road, Aminjikarai, Chennai, 600029, India
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Lin S, Hobbs B, Thall P, Tidwell R, Wei X, Komaki R, Chang J, Chun S, Jeter M, Hahn S, Swisher S, Ajani J, Murphy M, Vaporciyan A, Mehran R, Koong A, Gandhi S, Hofstetter W, Liao Z, Mohan R. Results of a Phase II Randomized Trial of Proton Beam Therapy vs Intensity Modulated Radiation Therapy in Esophageal Cancer. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.08.030] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Jain D, Mohan R, Singh VD. Comparison of microsurgical and macrosurgical technique using bioactive synthetic bone graft and collagen membrane for an implant site development: A randomized controlled clinical trial. J Indian Soc Periodontol 2019; 23:448-460. [PMID: 31543619 PMCID: PMC6737851 DOI: 10.4103/jisp.jisp_738_18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Background: Implant site development can be effective in minimizing postextraction alveolar ridge resorption in the esthetic region. Microsurgical approach has demonstrated substantial improvement in soft-tissue architecture. Aim and Objectives: The aim of the present study was to evaluate and compare the efficacy of microsurgical technique with conventional one for implant site development utilizing biphasic hydroxyapatite/beta-tricalcium phosphate bone graft substitute and collagen membrane. Materials and Methods: Thirty extraction sites were planned for implant placement and randomly divided into control (macrosurgical/conventional) and test (microsurgery) sites. Clinical measurements were recorded at four different points of extraction socket, i.e., mesiobuccal, midbuccal, distobuccal, and midlingual/palatal at baseline, 3, 6, and 9 months. Postoperative neovascularization at control and test site was evaluated by ultrasound Doppler flowmetry at baseline, 10th day, and 1 month. Radiological assessment of bone density (Hounsfield units) was measured at control and test sites at baseline, 6 and 9 months by computed tomography. Data was subjected to statistical analysis. Results: Significant socket fill at all the four different sites was observed and found to be statistically significant at test as compared to control group with better tissue contour after 3, 6, and 9 months. Test group demonstrated better neovascularization (P < 0.05) with significantly higher bone density (P = 0.000) at different time intervals. Conclusions: The results indicate that the augmentation of extraction sockets, not only improved the quality of bone in both the techniques but the utilization of microsurgical instruments and microsutures under magnification definitely enhanced the quality of soft tissues which is imperative for successful implant placement and its survival.
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Affiliation(s)
- Deepali Jain
- Department of Periodontology, Teerthanker Mahaveer Dental College and Research Centre, Moradabad, Uttar Pradesh, India
| | - Ranjana Mohan
- Department of Periodontology, Teerthanker Mahaveer Dental College and Research Centre, Moradabad, Uttar Pradesh, India
| | - Vikram Deep Singh
- Department of Periodontology, Teerthanker Mahaveer Dental College and Research Centre, Moradabad, Uttar Pradesh, India
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Moningi S, Nguyen Q, Lin S, Jeter M, O'Reilly M, Chang J, Chen A, Allen P, Lu C, Tsao A, Mohan R, Liao Z. Phase II Trial of Intensity-Modulated Photon or Scanning Beam Proton Therapy Both with Simultaneous Integrated Boost Dose Escalation to the Gross Tumor Volume with Concurrent Chemotherapy for Stage II/III Non-Small Cell Lung Cancer - Interim Analysis. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.2416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Ajdari A, Shusharina N, Liao Z, Mohan R, Bortfeld T. Mid-Treatment [18]F-FDG PET Uptakes Can Predict Symptomatic Radiation Pneumonitis in Non-Small Cell Lung Cancer Patients. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.315] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Palma G, Conson M, Xu T, Hahn S, Durante M, Mohan R, Liao Z, Cella L. Severe Radiation Induced Dermatitis after IMRT or Proton Therapy for Thoracic Cancer Patients. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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41
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Rastogi T, Chowdhary Z, Krishna MK, Mehrotra S, Mohan R. Prevalence of periodontitis in patients with pulmonary disease: A cross-sectional survey in the industrial district of India. J Indian Soc Periodontol 2019; 23:269-274. [PMID: 31143009 PMCID: PMC6519095 DOI: 10.4103/jisp.jisp_435_18] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Background Evidence state that periodontitis may have a contributory role in the onset and progression of pulmonary diseases. However, very limited data are available till date, studying the coexistence of both the conditions. Aim and Objective The aim and objective of this study are to determine the prevalence of periodontitis among patients affected with various pulmonary diseases in Moradabad District, Uttar Pradesh, India. Materials and Methods A total of 700 patients suffering from pulmonary diseases including tuberculosis (TB), chronic obstructive pulmonary disease, or pneumonia within the age group of 12-70 years were selected for the study. A detailed case-history for both pulmonary and periodontal status was taken. Periodontal Disease Index and Periodontal Index for Risk of Infectiousness were recorded for all patients. The scores were calculated and subjected to statistical analysis. Results Individuals with pulmonary diseases showed a statistically significant prevalence of periodontal disease with higher values of periodontal disease index (31%) and periodontal index for risk of infectiousness (55%) at P < 0.05. Patients suffering from TB within the age group of 51-60 (42%) showed the highest prevalence of periodontitis with a more number of males (43%) being affected as compared to females at P < 0.01. Conclusion Most of the study population was diagnosed with periodontitis with a higher proportion categorized under high-risk category as per PIRI scores.
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Affiliation(s)
| | - Zoya Chowdhary
- Department of Periodontology, Indira Gandhi Government Dental College, Jammu, Jammu and Kashmir, India
| | - Munagala Karthik Krishna
- Department of Periodontology, Teerthanker Mahaveer Dental College and Research Centre, Moradabad, Uttar Pradesh, India
| | - Shalabh Mehrotra
- Department of Periodontology, Teerthanker Mahaveer Dental College and Research Centre, Moradabad, Uttar Pradesh, India
| | - Ranjana Mohan
- Department of Periodontology, Teerthanker Mahaveer Dental College and Research Centre, Moradabad, Uttar Pradesh, India
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Skaarup M, Appelt A, Lundemann M, Darkner S, Jørgensen M, Thomsen C, Law I, Mirkovic D, Mohan R, Grosshans D, Peeler C, Vogelius I. EP-1919 Voxel-based assessment of proton RBE in paediatric brain cancer radiotherapy from multimodal imaging. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)32339-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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43
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Van Rossum P, Deng W, Routman D, Liu A, Xu C, Shiraishi Y, Peters M, Merrell K, Hallemeier C, Mohan R, Lin S. PO-0795 Prediction of severe lymphopenia during chemoradiotherapy for esophageal cancer. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)31215-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Khedraki R, Vanichsarn C, Moitoza A, Mohan R, Heywood J, Srivastava A. Aspirin: Therapy or Trouble for LVAD Patients? J Heart Lung Transplant 2019. [DOI: 10.1016/j.healun.2019.01.1077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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Abstract
Human jaws and teeth show a high diversity in the morphology, which varies from individual to individual. The variation in the morphologic feature is of great importance in the forensic field for identification. A tubercle or an accessory cusp is rare but is usually seen in the mandibular molar buccal aspect. From a forensic odontologist's point of view, the features though rare and unusual are useful for identification of the victim as well as criminal. The article presents three cases showing this rarest morphologic variation, i.e., the presence of a parastyle on a permanent maxillary second molar.
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Affiliation(s)
- Zoya Chowdhary
- Department of Periodontology, Indira Gandhi Government Dental College, Jammu, Jammu and Kashmir, India
| | - Disha Gupta
- Department of Periodontology, Teerthanker Mahaveer Dental College and Research Centre, Moradabad, Uttar Pradesh, India
| | - Ranjana Mohan
- Department of Periodontology, Teerthanker Mahaveer Dental College and Research Centre, Moradabad, Uttar Pradesh, India
| | - Aashima Bajaj
- Department of Periodontology, Teerthanker Mahaveer Dental College and Research Centre, Moradabad, Uttar Pradesh, India
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Ellsworth S, Mereniuk T, Zhang H, Grossman S, O'Neil B, Hobbs R, Shahda S, Mohan R, Kong F, Jin J. Kinetics and Dosimetric Predictors of Acute Radiation-Induced Lymphopenia in Pancreatic Cancer. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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47
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Wei X, Xu T, Allen P, Zhou R, Yang J, Yang P, Luo Y, Liu A, Mohan R, Liao Z. Low Radiation Therapy Dose of Cardiac and Descending Aorta are Associated with the Worst Grade of Radiation-Induced Lymphopenia in Locally Advanced Non-Small Cell Lung Cancer (NSCLC). Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.1915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Deng W, Xu C, Liu A, Liao Z, Mohan R, Lin S. Lymphocyte Count Recovery after Chemoradiation Therapy Does Not Mitigate the Poor Prognosis of Esophageal Cancer Patients with Severe Radiation Induced Lymphopenia. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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49
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Holliday E, Sawakuchi G, Martin R, Williamson T, Melkun M, Mohan R. Intensity-Modulated Proton Therapy (IMPT) Reduces Dose to Pelvic Bone Marrow and Normal Pelvic Organs when Compared to Volumetric-Modulated Arc Therapy (VMAT) for patients with Anal Cancer. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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50
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Eng L, Liu S, Farzanfar D, Alton D, Smith E, Mccartney A, Yeung S, Basgaran A, Balaratnam K, Mattina K, Harper C, Mohan R, Brown M, Hope A, Bradbury P, Sacher A, Leighl N, Shepherd F, Bezjak A, Howell D, Jones J, Xu W, Goldstein D, Evans W, Selby P, Giuliani M, Liu G. MA18.07 Awareness of the Harms of Continued Smoking Among Lung Cancer (LC) Survivors. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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