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Chicas-Sett R, Celada F, Burgos J, Farga D, Perez-Calatayud M, Roldan S, Collado E, Ibañez B, Perez-Calatayud J, Tormo A. PO-0726: Dose escalation with HDR brachytherapy for intermediate- and high-risk prostate cancer. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)31163-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Villalba SR, Palacin AO, Sancho JR, Perez-Calatayud J, Ortega MS. Systematic Checking of the Location of Brachytherapy Applicators in the Treatment of the Vaginal Cuff: Necesity to Guarantee Treatment Success. Brachytherapy 2017. [DOI: 10.1016/j.brachy.2017.04.129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Villalba SR, Sancho JR, Palacin AO, Perez-Calatayud J, Ortega MS. Single Radiation Therapy (EBRT) vs Combined Treatment (EBRT + BT) in Intermediate and High Risk Prostate Cancer. Are We Sure That Exclusive EBRT Is a Valid Approach Treatment Mode? Brachytherapy 2017. [DOI: 10.1016/j.brachy.2017.04.114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Chicas-Sett R, Farga-Albiol D, Perez-Calatayud MJ, Celada F, Roldan S, Burgos J, Ibanez-Rosello B, Benlloch JM, Perez-Calatayud J, Tormo A. Assessing the Relationship Between Dose-Volume Histogram Parameters and Late Rectal Toxicity in HDR Brachytherapy for Prostate Cancer. Brachytherapy 2017. [DOI: 10.1016/j.brachy.2017.04.216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Villalba SR, Palacin AO, Sancho JR, Perez-Calatayud J, Ortega MS, Domingo C. Twice vs Single Applications in High Dose Rate Brachytherapy (HDR) Boost. Same Results in High Risk Prostate Cancer Patients? Brachytherapy 2017. [DOI: 10.1016/j.brachy.2017.04.222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Ibanez-Rosello B, Bautista-Ballesteros J, Bonaque J, Perez-Calatayud J, Gonzalez-Sanchis A, Lopez-Torrecilla J, Brualla-Gonzalez L, Garcia- Hernandez M, Vicedo-Gonzalez A, Granero D, Serrano A, Borderia B, Rosello J. EP-1744: Failure modes and effects analysis of Total Skin Electron Irradiation (TSEI) technique. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)32107-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Lliso F, Carmona V, Gimeno J, Ibañez B, Bautista J, Bonaque J, Chicas R, Burgos J, Perez-Calatayud J. EP-1538: VMAT craniospinal radiotherapy, planning strategy and results in twenty pediatric and adult patients. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)31973-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Giménez-Alventosa V, Vijande J, Ballester F, Perez-Calatayud J. Transit dose comparisons for 60Co and 192Ir HDR sources. JOURNAL OF RADIOLOGICAL PROTECTION : OFFICIAL JOURNAL OF THE SOCIETY FOR RADIOLOGICAL PROTECTION 2016; 36:858-864. [PMID: 27739408 DOI: 10.1088/0952-4746/36/4/858] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The goal of this study is to evaluate the ambient dose due to the transit of high dose rate (HDR) 60Co sources along a transfer tube as compared to 192Ir ones in a realistic clinical scenario. This goal is accomplished by evaluating air-kerma differences with Monte Carlo calculations using PENELOPE2011. Scatter from both the afterloader and the patient was not taken into account. Two sources, mHDR-v2 and Flexisource Co-60, (Elekta Brachytherapy, Veenendaal, the Netherlands) have been considered. These sources were simulated within a standard transfer tube located in an infinite air phantom. The movement of the source was included by displacing their positions along the connecting tube from z = -75 cm to z = +75 cm and combining them. Since modern afterloaders like Flexitron (Elekta) or Saginova (BEBIG GmbH) are able to use equally 192Ir and 60Co sources, it was assumed that both sources are displaced with equal speed. Typical HDR source activity content values were provided by the manufacturer. 2D distributions were obtained with type-A uncertainties (k = 2) less than 0.01%. From those, the air-kerma ratio 60Co/192Ir was evaluated weighted by their corresponding typical activities. It was found that it varies slowly with distance (less than 10% variation at 75 cm) but strongly in time due to the shorter half-life of the 192Ir (73.83 d). The maximum ratio is located close to the tube. It reaches a value of 0.57 when the typical activity of the sources at the time when they were installed by the vendor was used. Such ratio increases up to 1.28 at the end of the recommended working life (90 d) of the 192Ir source. 60Co/192Ir air-kerma ratios are almost constant (0.51-0.57) in the vicinity of the source-tube with recent installed sources. Nevertheless, air-kerma ratios increase rapidly (1.15-1.29) whenever the 192Ir is approaching the end of its life. In case of a medical event requiring the medical staff to access the treatment room, these ratios indicate that the dosimetric impact on the medical team will be lower, with a few exceptions, in the case of 60Co-based HDR brachytherapy as compared to 192Ir-based one when typical air-kerma strength values are considered.
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Trompier F, Baumann M, Barrios L, Gregoire E, Abend M, Ainsbury E, Barnard S, Barquinero JF, Bautista JA, Brzozowska B, Perez-Calatayud J, De Angelis C, Domínguez I, Hadjidekova V, Kulka U, Mateos JC, Meschini R, Monteiro Gil O, Moquet J, Oestreicher U, Montoro Pastor A, Quintens R, Sebastià N, Sommer S, Stoyanov O, Thierens H, Terzoudi G, Villaescusa JI, Vral A, Wojcik A, Zafiropoulos D, Roy L. Investigation of the influence of calibration practices on cytogenetic laboratory performance for dose estimation. Int J Radiat Biol 2016; 93:118-126. [DOI: 10.1080/09553002.2016.1213455] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Rodríguez Villalba S, Richart Sancho J, Otal Palacín A, Perez-Calatayud J, Santos Ortega M. Development and clinical implementation of a new template for MRI-based intracavitary/interstitial gynecologic brachytherapy for locally advanced cervical cancer: from CT-based MUPIT to the MRI compatible Template Benidorm. Ten years of experience. J Contemp Brachytherapy 2016; 8:404-414. [PMID: 27895682 PMCID: PMC5116450 DOI: 10.5114/jcb.2016.63187] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2016] [Accepted: 08/22/2016] [Indexed: 01/01/2023] Open
Abstract
PURPOSE To study outcome and toxicity in 59 patients with locally advanced cervix carcinoma treated with computed tomography (CT)-based Martinez universal perineal interstitial template (MUPIT) and the new magnetic resonance imaging (MRI)-compatible template Benidorm (TB). MATERIAL AND METHODS From December 2005 to October 2015, we retrospectively analyzed 34 patients treated with MUPIT and 25 treated with the TB. Six 4 Gy fractions were prescribed to the clinical target volume (CTV) combined with external beam radiotherapy (EBRT). The organs at risk (OARs) and the CTV were delineated by CT scan in the MUPIT implants and by MRI in the TB implants. Dosimetry was CT-based for MUPIT and exclusively MRI-based for TB. Dose values were biologically normalized to equivalent doses in 2 Gy fractions (EQD2). RESULTS Median CTV volumes were 163.5 cm3 for CT-based MUPIT (range 81.8-329.4 cm3) and 91.9 cm3 for MRI-based TB (range 26.2-161 cm3). Median D90 CTV (EBRT + BT) was 75.8 Gy for CT-based MUPIT (range 69-82 Gy) and 78.6 Gy for MRI-based TB (range 62.5-84.2 Gy). Median D2cm3 for the rectum was 75.3 Gy for CT-based MUPIT (range 69.8-132.1 Gy) and 69.9 Gy for MRI-based TB (range 58.3-83.7 Gy). Median D2cm3 for the bladder was 79.8 Gy for CT-based MUPIT (range 71.2-121.1 Gy) and 77.1 Gy for MRI-based TB (range 60.5-90.8 Gy). Local control (LC) was 88%. Overall survival (OS), disease free survival (DFS), and LC were not statistically significant in either group. Patients treated with CT-based MUPIT had a significantly higher percentage of rectal bleeding G3 (p = 0.040) than those treated with MRI-based TB, 13% vs. 2%. CONCLUSIONS Template Benidorm treatment using MRI-based dosimetry provides advantages of MRI volume definition, and allows definition of smaller volumes that result in statistically significant decreased rectal toxicity compared to that seen with CT-based MUPIT treatment.
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Villalba SR, Perez-Calatayud MJ, Bautista JA, Carmona V, Celada F, Tormo A, García-Martinez T, Richart J, Ortega MS, Silla M, Ballester F, Perez-Calatayud J. Novel simple templates for reproducible positioning of skin applicators in brachytherapy. J Contemp Brachytherapy 2016; 8:344-8. [PMID: 27648089 PMCID: PMC5018523 DOI: 10.5114/jcb.2016.61713] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Accepted: 07/18/2016] [Indexed: 11/22/2022] Open
Abstract
PURPOSE Esteya and Valencia surface applicators are designed to treat skin tumors using brachytherapy. In clinical practice, in order to avoid errors that may affect the treatment outcome, there are two issues that need to be carefully addressed. First, the selected applicator for the treatment should provide adequate margin for the target, and second, the applicator has to be precisely positioned before each treatment fraction. In this work, we describe the development and use of a new acrylic templates named Template La Fe-ITIC. They have been designed specifically to help the clinical user in the selection of the correct applicator, and to assist the medical staff in reproducing the positioning of the applicator. These templates are freely available upon request. MATERIAL AND METHODS Templates that were developed by University and Polytechnic Hospital La Fe (La Fe) and Hospital Clínica Benidorm (ITIC) in cooperation with Elekta, consist of a thin sheet made of transparent acrylic. For each applicator, a crosshair and two different circles are drawn on these templates: the inner one corresponds to the useful beam, while the outer one represents the external perimeter of the applicator. The outer circle contains slits that facilitate to draw a circle on the skin of the patient for exact positioning of the applicator. In addition, there are two perpendicular rulers to define the adequate margin. For each applicator size, a specific template was developed. RESULTS The templates have been used successfully in our institutions for more than 50 patients' brachytherapy treatments. They are currently being used for Esteya and Valencia applicators. CONCLUSIONS The template La Fe-ITIC is simple and practical. It improves both the set-up time and reproducibility. It helps to establish the adequate margins, an essential point in the clinical outcome.
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Gimenez-Alventosa V, Vijande J, Ballester F, Perez-Calatayud J. SU-F-T-13: Transit Dose Comparisons for Co-60 and Ir-192 HDR Sources. Med Phys 2016. [DOI: 10.1118/1.4956147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Richart J, Otal A, Rodriguez S, Santos M, Perez-Calatayud J. SU-F-T-47: MRI T2 Exclusive Based Planning Using the Endocavitary/interstitial Gynecological Benidorm Applicator: A Proposed TPS Library and Preplan Efficient Methodology. Med Phys 2016. [DOI: 10.1118/1.4956182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Granero D, Candela-Juan C, Vijande J, Ballester F, Perez-Calatayud J, Jacob D, Mourtada F. SU-F-T-63: Dosimetric Relevance of the Valencia and Leipzig HDR Applicators Plastic Cap. Med Phys 2016. [DOI: 10.1118/1.4956469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Ibanez-Rosello B, Bautista-Ballesteros J, Bonaque J, Perez-Calatayud J, Gonzalez-Sanchis A, Lopez-Torrecilla J, Brualla-Gonzalez L, Garcia-Hernandez T, Vicedo-Gonzalez A, Granero D, Serrano A, Borderia B, Solera C, Rosello J. SU-F-T-248: FMEA Risk Analysis Implementation (AAPM TG-100) in Total Skin Electron Irradiation Technique. Med Phys 2016. [DOI: 10.1118/1.4956471] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Hueso-Gonzalez F, Vijande J, Ballester F, Perez-Calatayud J, Siebert F. SU-G-201-02: Application of RayStretch in Clinical Cases: A Calculation for Heterogeneity Corrections in LDR Permanent I-125 Prostate Brachytherapy. Med Phys 2016. [DOI: 10.1118/1.4956875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Ibanez-Rosello B, Bautista-Ballesteros J, Bonaque J, Lliso F, Carmona V, Gimeno J, Ouhib Z, Perez-Calatayud J. WE-H-BRC-01: Failure Mode and Effects Analysis of Skin Electronic Brachytherapy Using Esteya Unit. Med Phys 2016. [DOI: 10.1118/1.4957979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Bonaque J, Bautista-Ballesteros J, Ibanez-Rosello B, Lliso F, Carmona V, Gimeno J, Perez-Calatayud J. SU-F-J-40: Evaluation of Sensitivity of the Automatic Matching Between Cone-Beam CT Image and Simulation CT Image in TrueBeam 2.0 Imaging System 6DoF Considering Different Uncertainty Sources. Med Phys 2016. [DOI: 10.1118/1.4955948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Quast U, Kaulich TW, Álvarez-Romero JT, Carlsson Tedgren S, Enger SA, Medich DC, Mourtada F, Perez-Calatayud J, Rivard MJ, Zakaria GA. A brachytherapy photon radiation quality index Q(BT) for probe-type dosimetry. Phys Med 2016; 32:741-8. [PMID: 27237583 DOI: 10.1016/j.ejmp.2016.03.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Revised: 02/15/2016] [Accepted: 03/16/2016] [Indexed: 11/18/2022] Open
Abstract
INTRODUCTION In photon brachytherapy (BT), experimental dosimetry is needed to verify treatment plans if planning algorithms neglect varying attenuation, absorption or scattering conditions. The detector's response is energy dependent, including the detector material to water dose ratio and the intrinsic mechanisms. The local mean photon energy E¯(r) must be known or another equivalent energy quality parameter used. We propose the brachytherapy photon radiation quality indexQ(BT)(E¯), to characterize the photon radiation quality in view of measurements of distributions of the absorbed dose to water, Dw, around BT sources. MATERIALS AND METHODS While the external photon beam radiotherapy (EBRT) radiation quality index Q(EBRT)(E¯)=TPR10(20)(E¯) is not applicable to BT, the authors have applied a novel energy dependent parameter, called brachytherapy photon radiation quality index, defined as Q(BT)(E¯)=Dprim(r=2cm,θ0=90°)/Dprim(r0=1cm,θ0=90°), utilizing precise primary absorbed dose data, Dprim, from source reference databases, without additional MC-calculations. RESULTS AND DISCUSSION For BT photon sources used clinically, Q(BT)(E¯) enables to determine the effective mean linear attenuation coefficient μ¯(E) and thus the effective energy of the primary photons Eprim(eff)(r0,θ0) at the TG-43 reference position Pref(r0=1cm,θ0=90°), being close to the mean total photon energy E¯tot(r0,θ0). If one has calibrated detectors, published E¯tot(r) and the BT radiation quality correction factor [Formula: see text] for different BT radiation qualities Q and Q0, the detector's response can be determined and Dw(r,θ) measured in the vicinity of BT photon sources. CONCLUSIONS This novel brachytherapy photon radiation quality indexQ(BT) characterizes sufficiently accurate and precise the primary photon's penetration probability and scattering potential.
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Chicas-Sett R, Perez-Calatayud J, Bautista-Ballesteros J, Celada F, Roldán S, Torregrosa A, Betancourt J, Farga-Albiol D, Carmona V, Tormo A. An Evaluation of the Robustness of the Organ-at-Risk Recommendations Made by GEC/ESTRO According to Inter- and Intra- Observer Variability: A Single Center Experience. Brachytherapy 2016. [DOI: 10.1016/j.brachy.2016.04.347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Granero D, Candela-Juan C, Vijande J, Ballester F, Perez-Calatayud J, Jacob D, Mourtada F. Dosimetric Deviation of Leipzig and Valencia Skin Applicators When Used without Cap. Brachytherapy 2016. [DOI: 10.1016/j.brachy.2016.04.302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Vijande J, Ballester F, Candela-Juan C, Niatsetski Y, van der Laarse R, Graneero D, Perez-Calatayud J. New HDR Valencia Applicator for Treating Skin Lesions Larger Than 3 cm Size with Either a Co-60 or Ir-192 Source. Brachytherapy 2016. [DOI: 10.1016/j.brachy.2016.04.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Rodriguez S, Otal A, Richart J, Perez-Calatayud J, Cañon R, Santos M. Interstitial Brachytherapy in Locally Advanced Cervical Cancer: From MUPIT to Full Compatible MRI Mixed Intracavitary/Interstitial Template. 10 Years of Experience. Brachytherapy 2016. [DOI: 10.1016/j.brachy.2016.04.193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Rodriguez S, Otal A, Richart J, Perez-Calatayud J, Santos M. Pre-Plan Technique Feasibility in Multi-Interstitial Gynecological Brachytherapy. Brachytherapy 2016. [DOI: 10.1016/j.brachy.2016.04.158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Granero D, Candela-Juan C, Vijande J, Ballester F, Perez-Calatayud J, Jacob D, Mourtada F. Technical Note: Dosimetry of Leipzig and Valencia applicators without the plastic cap. Med Phys 2016; 43:2087. [DOI: 10.1118/1.4944784] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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