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D’Souza G, Tewari SR, Troy T, Webster-Cyriaque J, Wiley DJ, Lahiri CD, Palella FJ, Gillison ML, Strickler HD, Struijk L, Waterboer T, Ho K, Kwait J, Lazar J, Weber KM, Fakhry C. Oncogenic Oral Human Papillomavirus Clearance Patterns over 10 Years. Cancer Epidemiol Biomarkers Prev 2024; 33:516-524. [PMID: 38294704 PMCID: PMC10990780 DOI: 10.1158/1055-9965.epi-23-1272] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Revised: 12/06/2023] [Accepted: 01/29/2024] [Indexed: 02/01/2024] Open
Abstract
BACKGROUND Effective screening for oropharyngeal cancer is lacking. Four oncogenic HPV clearance definitions were explored to understand long-term natural history for persistent oncogenic oral HPV (oncHPV), the precursor of oropharyngeal cancer. METHODS Prospective multicenter cohort of participants living with/at-risk for HIV, with oral rinse and gargle samples collected every 6 to 12 months for up to 10 years and tested for oncHPV. HPV clearance definitions included 1 (clear1), 2 (clear2), 3 (clear3) consecutive negatives, or being negative at last two visits (clearlast). RESULTS Median time to clearance of oncHPV exceeded 2 years for conservative definitions (clear3: 2.38, clearlast: 2.43), but not lenient (clear1: 0.68, clear2: 1.15). By clear3, most incident infections cleared at 2, 5, 8 years (55.1%, 75.6%, 79.1%), contrary to prevalent infections (37.1%, 52.5%, 59.5%, respectively). In adjusted analysis, prevalent oncHPV, older age, male sex, and living with HIV were associated with reduced clearance. Of 1,833 subjects screened, 13.8% had prevalent oncHPV and 47.5% of those infections persisted ≥5 years, representing 6.5% of persons screened. Two men with prevalent oral HPV16 developed incident oropharyngeal cancer [IR = 1.62 per 100 person-years; 95% confidence interval (CI), 0.41-6.4]. Many with oral HPV16 persisted ≥5 years (and/or developed HPV-oropharyngeal cancer) among those with 2 (72.2%), ≥2 of first 3 (65.7%), or 3 (80.0%) consecutive positive oHPV16 tests, but not after 1 (39.4%). CONCLUSIONS In our 10-year study, most incident infections cleared quickly. However, half of prevalent oncHPV persisted ≥5 years, suggesting increased risk with persistent oncHPV at >2 visits. IMPACT We identified groups with persistent oncHPV at increased risk of oropharyngeal cancer and contextualized risk levels for those with oral HPV16 infection.
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Affiliation(s)
- Gypsyamber D’Souza
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health
- Department of Otolaryngology Head and Neck Surgery, Johns Hopkins School of Medicine
| | - Sakshi R. Tewari
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health
| | - Tanya Troy
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health
- Department of Otolaryngology Head and Neck Surgery, Johns Hopkins School of Medicine
| | | | - Dorothy J. Wiley
- School of Nursing, University of California, Los Angeles, Los Angeles, California
| | - Cecile Delille Lahiri
- Department of Medicine, Division of Infectious Diseases, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Frank Joseph Palella
- Division of Infectious Diseases, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Maura L. Gillison
- Department of Thoracic-Head and neck medical oncology, MD Anderson Cancer Center
| | - Howard D. Strickler
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine
| | - Linda Struijk
- Viroclinics-DDL Diagnostic Laboratory, Rijswijk, the Netherlands
| | - Tim Waterboer
- Division of Infections and Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Ken Ho
- Department of Medicine, University of Pittsburgh, Pittsburgh, PA
| | | | - Jason Lazar
- Department of Medical Education, SUNY Downstate Health Science University
| | | | - Carole Fakhry
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health
- Department of Otolaryngology Head and Neck Surgery, Johns Hopkins School of Medicine
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Tewari SR, Kirk GD, Arking DE, Astemborski J, Newcomb C, Piggott DA, Mehta S, Lucas GM, Sun J. Mitochondrial DNA copy number is associated with incident chronic kidney disease and proteinuria in the AIDS linked to the intravenous experience cohort. Sci Rep 2023; 13:18406. [PMID: 37891237 PMCID: PMC10611749 DOI: 10.1038/s41598-023-45404-9] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Accepted: 10/19/2023] [Indexed: 10/29/2023] Open
Abstract
We evaluated the prospective association of mitochondrial DNA copy number (mtDNA CN) with markers of kidney function among a cohort of persons who inject drugs (PWID). This is a Prospective cohort study nested in the AIDS linked to the intravenous experience cohort (community-based cohort of PWID in Baltimore, MD). mtDNA CN was measured at two time-points 5 years apart using a real-time polymerase chain reaction. Kidney function (estimated glomerular filtration rate [eGFR], serum creatinine, urine protein) was measured annually. We used linear mixed effects models to evaluate kidney function trajectories (N = 946) and Cox regression models to assess hazard of incident CKD (eGFR < 60 at two consecutive visits, N = 739) and proteinuria (urine protein:creatinine ratio > 200, N = 573) by level of mtDNA CN (Low [lowest quartile], vs high [other three quartiles]. Models were adjusted for demographic and behavioral characteristics, HIV and/or HCV infection, and comorbidity burden. Low mtDNA CN was independently associated with higher hazard of incident CKD (aHR: 2.33, 95% CI 1.42, 3.80) and proteinuria (aHR: 1.42, 95% CI 1.04, 1.96). Participants with low mtDNA CN had greater declines in eGFR and greater increases in serum creatinine over time. Low mtDNA CN is associated with more rapid kidney function decline and risk of incident CKD and proteinuria.
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Affiliation(s)
- Sakshi R Tewari
- Department of Epidemiology, Johns Hopkins University, Bloomberg School of Public Health, Baltimore, USA
| | - Gregory D Kirk
- Department of Epidemiology, Johns Hopkins University, Bloomberg School of Public Health, Baltimore, USA
- Department of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Dan E Arking
- Department of Genetic Medicine, McKusick-Nathan Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Jacquie Astemborski
- Department of Epidemiology, Johns Hopkins University, Bloomberg School of Public Health, Baltimore, USA
| | - Charles Newcomb
- Department of Genetic Medicine, McKusick-Nathan Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Damani A Piggott
- Department of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Shruti Mehta
- Department of Epidemiology, Johns Hopkins University, Bloomberg School of Public Health, Baltimore, USA
| | - Gregory M Lucas
- Department of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Jing Sun
- Department of Epidemiology, Johns Hopkins University, Bloomberg School of Public Health, Baltimore, USA.
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DSouza G, Tewari SR, Troy T, Waterboer T, Struijk L, Castillo R, Wright H, Shen M, Miles B, Johansson M, Robbins HA, Fakhry C. Prevalence of oral and blood oncogenic human papillomavirus biomarkers among an enriched screening population: Baseline results of the MOUTH study. Cancer 2023; 129:2373-2384. [PMID: 37032449 PMCID: PMC10330354 DOI: 10.1002/cncr.34783] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 03/02/2023] [Accepted: 03/07/2023] [Indexed: 04/11/2023]
Abstract
BACKGROUND Human papillomavirus (HPV)-related oropharyngeal cancer screening is being explored in research studies, but strategies to identify an appropriate population are not established. The authors evaluated whether a screening population could be enriched for participants with oncogenic HPV biomarkers using risk factors for oral HPV. METHODS Participants were enrolled at Johns Hopkins Hospitals and Mount Sinai Icahn School of Medicine. Eligible participants were either men aged 30 years or older who had two or more lifetime oral sex partners and a personal history of anogenital dysplasia/cancer or partners of patients who had HPV-related cancer. Oral rinse and serum samples were tested for oncogenic HPV DNA, RNA, and E6 or E7 antibodies, respectively. Participants with any biomarker were considered at-risk. RESULTS Of 1108 individuals, 7.3% had any oncogenic oral HPV DNA, and 22.9% had serum antibodies for oncogenic HPV E6 or E7. Seventeen participants (1.5%) had both oral and blood biomarkers. HPV type 16 (HPV16) biomarkers were rarer, detected in 3.7% of participants, including 20 with oral HPV16 DNA and 22 with HPV16 E6 serum antibodies (n = 1 had both). In adjusted analysis, living with HIV (adjusted odds ratio, 2.65; 95% CI, 1.60-4.40) and older age (66-86 vs. 24-45 years; adjusted odds ratio, 1.70; 95% CI, 1.07-2.70) were significant predictors of being at risk. Compared with the general population, the prevalence of oral HPV16 (1.8% vs. 0.9%), any oncogenic oral HPV DNA (7.3% vs. 3.5%), and HPV16 E6 antibodies (2.2% vs. 0.3%) was significantly elevated. CONCLUSIONS Enrichment by the eligibility criteria successfully identified a population with higher biomarker prevalence, including HPV16 biomarkers, that may be considered for screening trials. Most in this group are still expected to have a low risk of oropharyngeal cancer.
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Affiliation(s)
- Gypsyamber DSouza
- Departments of Epidemiology & Otolaryngology-Head and Neck Surgery, Johns Hopkins, Baltimore, Maryland
| | - Sakshi R Tewari
- Departments of Epidemiology & Otolaryngology-Head and Neck Surgery, Johns Hopkins, Baltimore, Maryland
| | - Tanya Troy
- Departments of Epidemiology & Otolaryngology-Head and Neck Surgery, Johns Hopkins, Baltimore, Maryland
| | - Tim Waterboer
- Division of Infections and Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Linda Struijk
- Viroclinics-DDL Diagnostic Laboratory, Rijswijk, Netherlands
| | - Rachel Castillo
- Departments of Epidemiology & Otolaryngology-Head and Neck Surgery, Johns Hopkins, Baltimore, Maryland
| | - Hannah Wright
- Departments of Epidemiology & Otolaryngology-Head and Neck Surgery, Johns Hopkins, Baltimore, Maryland
| | - Michael Shen
- Departments of Epidemiology & Otolaryngology-Head and Neck Surgery, Johns Hopkins, Baltimore, Maryland
| | - Brett Miles
- Department of Otolaryngology-Head and Neck Surgery, Northwell Health, New York, NY
| | - Mattias Johansson
- Genomic Epidemiology Branch, International Agency for Research on Cancer, Lyon, France
| | - Hilary A Robbins
- Genomic Epidemiology Branch, International Agency for Research on Cancer, Lyon, France
| | - Carole Fakhry
- Departments of Epidemiology & Otolaryngology-Head and Neck Surgery, Johns Hopkins, Baltimore, Maryland
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Scott-Wittenborn N, D'Souza G, Aygun N, Tewari SR, Azadi J, Vosler P, Gooi Z, Mehta V, Mydlarz W, Nance M, Mlot S, Patel MR, Tan M, Miles BA, Troy T, Fakhry C. Feasibility of clinical evaluation of individuals with increased risk for HPV-associated oropharynx cancer. Head Neck 2023; 45:95-102. [PMID: 36200696 DOI: 10.1002/hed.27212] [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] [Received: 01/24/2022] [Revised: 07/13/2022] [Accepted: 09/21/2022] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Human papillomavirus-associated oropharynx squamous cell carcinoma (HPV-OPSCC) has no known pre-malignant lesion. While vaccination offers future primary prevention, there is current interest in secondary prevention. The feasibility of clinical evaluation of individuals at increased risk for HPV-OPSCC is unclear. METHODS Individuals with risk factors for HPV-OPSCC were enrolled in a prospective study (MOUTH). Participants positive for biomarkers associated with HPV-OPSCC were eligible for a clinical evaluation which comprised a head and neck examination and imaging with ultrasound and/or magnetic resonance imaging (MRI). This study was designed to evaluate feasibility of clinical evaluation in a screening study. RESULTS Three hundred and eighty-four participants were eligible for clinical evaluation. Of the 384, 204 (53%) completed a head and neck examination or imaging. Of these, 66 (32%) completed MRI (n = 51) and/or ultrasound (n = 64) studies. CONCLUSIONS Clinical evaluations, including head and neck examination and imaging, are feasible in the context of a screening study for HPV-OPSCC.
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Affiliation(s)
- Nicholas Scott-Wittenborn
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University, Baltimore, Maryland, USA
| | - Gypsyamber D'Souza
- Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - Nafi Aygun
- Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins Hospital, Baltimore, Maryland, USA
| | - Sakshi R Tewari
- Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - Javad Azadi
- Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins Hospital, Baltimore, Maryland, USA
| | - Peter Vosler
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University, Baltimore, Maryland, USA
| | - Zhen Gooi
- Section of Otolaryngology-Head and Neck Surgery, Biological Sciences Division, Department of Surgery, University of Chicago Medicine, Chicago, Illinois, USA
| | - Vikas Mehta
- Department of Otorhinolaryngology-Head and Neck Surgery, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, New York, USA
| | - Wojciech Mydlarz
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University, Baltimore, Maryland, USA
| | - Melonie Nance
- Department of Otolaryngology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Stefan Mlot
- ENT and Allergy Associates LLP, White Plains, New York, USA
| | - Mihir R Patel
- Department of Otolaryngology Head and Neck Surgery, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Marietta Tan
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University, Baltimore, Maryland, USA
| | | | - Tanya Troy
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University, Baltimore, Maryland, USA
| | - Carole Fakhry
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University, Baltimore, Maryland, USA.,Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland, USA
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Tewari SR, D’Souza G, Troy T, Wright H, Struijk L, Waterboer T, Fakhry C. Association of Plasma Circulating Tumor HPV DNA With HPV-Related Oropharynx Cancer. JAMA Otolaryngol Head Neck Surg 2022; 148:488-489. [PMID: 35323891 PMCID: PMC8949748 DOI: 10.1001/jamaoto.2022.0159] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Sakshi R. Tewari
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Gypsyamber D’Souza
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Tanya Troy
- Department of Otolaryngology Research, The Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Hannah Wright
- Department of Otolaryngology Research, The Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Linda Struijk
- Viroclinics-DDL Diagnostic Laboratory, Rijswijk, the Netherlands
| | - Tim Waterboer
- Division of Infections and Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Carole Fakhry
- Department of Otolaryngology–Head and Neck Surgery, Johns Hopkins Hospital, Baltimore, Maryland
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Fakhry C, Tewari SR, Zhang L, Windon MJ, Bigelow EO, Drake VE, Rooper LM, Troy T, Ha P, Miles BA, Mydlarz WK, Eisele DW, D'Souza G. RTOG-0129 risk groups are reproducible in a prospective multicenter heterogeneously treated cohort. Cancer 2021; 127:3523-3530. [PMID: 34143891 DOI: 10.1002/cncr.33682] [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: 01/10/2021] [Revised: 04/21/2021] [Accepted: 05/11/2021] [Indexed: 12/15/2022]
Abstract
BACKGROUND Recursive partitioning analysis (RPA) from the Radiation Therapy Oncology Group (RTOG)-0129 has identified a low-risk group of patients with oropharynx cancer (OPC) who might benefit from therapeutic de-intensification. These risk groups have not yet been reproduced in an independent cohort treated heterogeneously. Therefore, the objective of this analysis was to validate the RPA risk groups and examine the prognostic impact of novel factors. METHODS Patients with OPC were enrolled in a prospective study at 3 academic medical centers from 2013 to 2018. Medical record abstraction was used to ascertain clinical variables including staging and survival according to the 7th edition of the American Joint Committee on Cancer (AJCC) Cancer Staging Manual. Human papillomavirus-positive tumor status was determined by p16 immunohistochemistry and/or HPV RNA in situ hybridization. Kaplan-Meier and log-rank methods were used to compare survival. Cox proportional hazards were used to generate univariate and multivariable hazard ratios (HRs). RESULTS Median follow-up time was 3.2 years. The low-, intermediate-, and high-risk groups had significant differences in 2-year overall survival (OS, 99.1%; 95% CI, 94.4%-99.9% vs OS, 93.0%; 95% CI, 74.7%-98.2% vs OS, 80.0%; 95% CI, 40.9%-94.6%; Poverall = .0001) and 2-year progression-free survival (PFS, 97.5%; 95% CI, 92.4%-99.2% vs PFS, 89.3%; 95% CI, 70.3%-96.4% vs PFS, 80.0%; 95% CI, 40.9%-94.6%; Poverall < .002). After adjustment for age, sex, and level of educational attainment, OS and PFS were significantly lower for the intermediate- (OS adjusted hazard ratio [aHR], 5.0; 95% CI, 1.0-23.0; PFS aHR, 3.4; 95% CI, 1.0-11.5), and high- (OS aHR, 7.3; 95% CI, 1.4-39; PFS aHR, 5.0; 95% CI, 1.2-21.6) risk groups compared with the low-risk group. Lower education was also independently significantly associated with worse OS (aHR, 8.9; 95% CI, 1.8-44.3) and PFS (aHR, 3.1; 95% CI, 1.0-9.6). CONCLUSIONS In patients with OPC, the RTOG-0129 RPA model is associated with OS and PFS in a heterogeneously treated cohort.
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Affiliation(s)
- Carole Fakhry
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins Hospital, Baltimore, Maryland.,Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Sakshi R Tewari
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Lisa Zhang
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins Hospital, Baltimore, Maryland
| | - Melina J Windon
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins Hospital, Baltimore, Maryland
| | - Elaine O Bigelow
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins Hospital, Baltimore, Maryland
| | - Virginia E Drake
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins Hospital, Baltimore, Maryland
| | - Lisa M Rooper
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Tanya Troy
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Patrick Ha
- Department of Otolaryngology Head and Neck Surgery, University of California, San Francisco, California
| | - Brett A Miles
- Department of Otolaryngology Head and Neck Surgery, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Wojciech K Mydlarz
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins Hospital, Baltimore, Maryland
| | - David W Eisele
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins Hospital, Baltimore, Maryland
| | - Gypsyamber D'Souza
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
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Fakhry C, Fung N, Tewari SR, D'Souza G. Unique role of HPV16 in predicting oropharyngeal cancer risk more than other oncogenic oral HPV infections. Oral Oncol 2020; 111:104981. [PMID: 32873464 PMCID: PMC8067660 DOI: 10.1016/j.oraloncology.2020.104981] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Revised: 08/19/2020] [Accepted: 08/22/2020] [Indexed: 02/07/2023]
Affiliation(s)
- Carole Fakhry
- Department of Otolaryngology - Head and Neck Surgery, Johns Hopkins Hospital, Baltimore, MD, United States; Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States.
| | - Nicholas Fung
- Department of Otolaryngology - Head and Neck Surgery, Johns Hopkins Hospital, Baltimore, MD, United States
| | - Sakshi R Tewari
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States
| | - Gypsyamber D'Souza
- Department of Otolaryngology - Head and Neck Surgery, Johns Hopkins Hospital, Baltimore, MD, United States; Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States.
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Pandey S, Chowdhury AR, Tewari SR, Kamboj VP. Trace elements in cervical mucus of infertile women. Indian J Med Res 1986; 84:163-6. [PMID: 3759169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
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