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Morten Ruge Center for Clinical Research and Disease Prevention, Bispebjerg and Frederiksberg Hospital, The Capital Region, Copenhagen, Denmark

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Tea Skaaby Center for Clinical Research and Disease Prevention, Bispebjerg and Frederiksberg Hospital, The Capital Region, Copenhagen, Denmark

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Anna-Maria Andersson Department of Growth and Reproduction, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
International Center for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Rigshospitalet, University of Copenhagen, Copenhagen, Denmark

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Allan Linneberg Center for Clinical Research and Disease Prevention, Bispebjerg and Frederiksberg Hospital, The Capital Region, Copenhagen, Denmark
Department of Clinical Experimental Research, Rigshospitalet, Copenhagen, Denmark
Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark

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GAM analysis, where no statistically significant associations were found. The observed lack of associations between sleep quality and serum levels of hormones is consistent with three other cross-sectional studies ( 14 , 15 , 16 ). However, one

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Sun Fei Wuxi Medical College of Jiangnan University, Wuxi, China

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Min Liu Wuxi Maternity and Child Health Care Hospital, Wuxi, China

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Hu Shanshan Wuxi Maternity and Child Health Care Hospital, Wuxi, China

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Ruijie Xie Department of Microsurgery, University of South China, Hengyang, China

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Wu Danni Wuxi Medical College of Jiangnan University, Wuxi, China

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Zhou Ningying Wuxi Medical College of Jiangnan University, Wuxi, China

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://www.cdc.gov/nchs/index.htm ). This study followed the Reporting of Observational Studies in Epidemiology (STROBE) reporting guidelines for cross-sectional studies. Study population The NHANES datasets were utilized for this investigation from 1999 to 2020. To ensure the

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Mauricio Alvarez Endocrinology Program, Facultad de Medicina y Ciencias de la Salud, Universidad Militar Nueva Granada,Bogotá, Colombia
Endocrinology Department, Hospital Militar Central, Bogotá, Colombia

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Oswaldo Rincón Sierra Endocrinology Department, Hospital Militar Central, Bogotá

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Ginna Saavedra Investigation Department, Epidemiology, Hospital Militar Central, Bogotá, Colombia

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Sergio Moreno Investigation Department, Statistics, Hospital Militar Central, Bogotá, Colombia

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with chronic metformin use and evaluate how it is related with diabetic neuropathy. Methodology A cross-sectional study was conducted to estimate the prevalence of vitamin B12 deficiency in patients with chronic metformin use and the prevalence

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Gregory Knowles Walsall Manor Hospital, Walsall, UK

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Emily Warmington College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK

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Lisa M Shepherd Department of Endocrinology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, UK

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Jonathan M Hazlehurst Department of Endocrinology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
Institute of Applied Health Research, University of Birmingham, Birmingham, UK

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Anne de Bray Department of Endocrinology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, UK

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Helena Gleeson Department of Endocrinology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK

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Wiebke Arlt Department of Endocrinology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, UK
Medical Research Council London Institute of Medical Sciences, London, UK

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Alessandro Prete Department of Endocrinology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, UK
NIHR Birmingham Biomedical Research Centre, University of Birmingham and University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK

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.3%; 0.001). Less than half of the patients included in the study reported having the National Health Service COVID-19 application on their phones (AD, 40.2%; CAH, 51.3%) ( Table 3 ). Discussion In this cross-sectional study, we demonstrated

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Unni Syversen Department of Clinical and Molecular Medicine, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
Department of Endocrinology, Trondheim University Hospital (St Olavs Hospital), Trondheim, Norway

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Mats Peder Mosti Department of Clinical and Molecular Medicine, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
Medical Clinic, Trondheim University Hospital (St Olavs Hospital), Trondheim, Norway

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Ida Maria Mynarek Department of Clinical and Molecular Medicine, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Trondheim, Norway

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Trude Seselie Jahr Vedal Department of Clinical and Molecular Medicine, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Trondheim, Norway

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Kristin Aasarød Department of Clinical and Molecular Medicine, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
Department of Gastroenterology, Trondheim University Hospital (St Olavs Hospital), Trondheim, Norway

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Trude Basso Department of Orthopedics, Trondheim University Hospital (St Olavs Hospital), Trondheim, Norway

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Janne E Reseland Department of Biomaterials, University of Oslo, Oslo, Norway

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Per Medbøe Thorsby Hormone Laboratory, Department of Medical Biochemistry, Oslo University Hospital, Aker, Oslo, Norway

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Bjorn O Asvold Department of Endocrinology, Trondheim University Hospital (St Olavs Hospital), Trondheim, Norway
K.G. Jebsen Center for Genetic Epidemiology, Department of Public Health and Nursing, NTNU, Trondheim, Norway

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Erik Fink Eriksen Department of Biomaterials, University of Oslo, Oslo, Norway

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Astrid Kamilla Stunes Department of Clinical and Molecular Medicine, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
Medical Clinic, Trondheim University Hospital (St Olavs Hospital), Trondheim, Norway

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design and study population This cross-sectional study was approved by the Regional Committee for Medical and Health Research Ethics in Central Norway. Consent was obtained from each subject after a full explanation of the purpose and nature of all

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Rongpeng Gong Medical College, Qinghai University, Xining, People’s Republic of China

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Gang Luo College of Eco-Environmental Engineering, Qinghai University, Xining, People’s Republic of China

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Mingxiang Wang Medical College, Qinghai University, Xining, People’s Republic of China

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Lingbo Ma Medical College, Qinghai University, Xining, People’s Republic of China

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Shengnan Sun Medical College, Qinghai University, Xining, People’s Republic of China

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Xiaoxing Wei Medical College, Qinghai University, Xining, People’s Republic of China

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/HDL ratio was linked to IR in adults in the United States. Participants and methods Study design This was a cross-sectional study. The target-independent and outcome variable was the TG/HDL ratio and IR, respectively. All indicators of each

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Natércia Neves Marques de Queiroz University Hospital João de Barros Barreto, Federal University of Pará, Endocrinology Division, Belem, Pará, Brazil

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Franciane Trindade Cunha de Melo University Hospital João de Barros Barreto, Federal University of Pará, Endocrinology Division, Belem, Pará, Brazil

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Fabrício de Souza Resende University Hospital João de Barros Barreto, Federal University of Pará, Endocrinology Division, Belem, Pará, Brazil

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Luísa Corrêa Janaú University Hospital João de Barros Barreto, Federal University of Pará, Endocrinology Division, Belem, Pará, Brazil

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Norberto Jorge Kzan de Souza Neto University Hospital João de Barros Barreto, Federal University of Pará, Endocrinology Division, Belem, Pará, Brazil

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Manuela Nascimento de Lemos University Hospital João de Barros Barreto, Federal University of Pará, Endocrinology Division, Belem, Pará, Brazil

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Ana Carolina Lobato Virgolino University Hospital João de Barros Barreto, Federal University of Pará, Endocrinology Division, Belem, Pará, Brazil

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Maria Clara Neres Iunes de Oliveira University Hospital João de Barros Barreto, Federal University of Pará, Endocrinology Division, Belem, Pará, Brazil

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Angélica Leite de Alcântara University Hospital João de Barros Barreto, Federal University of Pará, Endocrinology Division, Belem, Pará, Brazil

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Lorena Vilhena de Moraes University Hospital João de Barros Barreto, Federal University of Pará, Endocrinology Division, Belem, Pará, Brazil

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Tiago Franco David University Hospital João de Barros Barreto, Federal University of Pará, Endocrinology Division, Belem, Pará, Brazil

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Wanderson Maia da Silva University Hospital João de Barros Barreto, Federal University of Pará, Endocrinology Division, Belem, Pará, Brazil

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Scarlatt Souza Reis University Hospital João de Barros Barreto, Federal University of Pará, Endocrinology Division, Belem, Pará, Brazil

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Márcia Costa dos Santos University Hospital João de Barros Barreto, Federal University of Pará, Endocrinology Division, Belem, Pará, Brazil

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Ana Carolina Contente Braga de Souza University Hospital João de Barros Barreto, Federal University of Pará, Endocrinology Division, Belem, Pará, Brazil

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Pedro Paulo Freire Piani University Hospital João de Barros Barreto, Federal University of Pará, Endocrinology Division, Belem, Pará, Brazil

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Neyla Arroyo Lara Mourão University Hospital João de Barros Barreto, Federal University of Pará, Endocrinology Division, Belem, Pará, Brazil

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Karem Mileo Felício University Hospital João de Barros Barreto, Federal University of Pará, Endocrinology Division, Belem, Pará, Brazil

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João Felício Abrahão Neto University Hospital João de Barros Barreto, Federal University of Pará, Endocrinology Division, Belem, Pará, Brazil

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João Soares Felício University Hospital João de Barros Barreto, Federal University of Pará, Endocrinology Division, Belem, Pará, Brazil

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becomes meaningfully important. Method Study design and data collection A cross-sectional study was performed to evaluate serum levels of 25(OH)D, intact PTH and ionized calcium. All our subjects lived in the state of Pará (coordinates: 3.95°S

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Xiangyu Gao Department of Endocrinology, Huashan Hospital, Fudan University, Shanghai, China

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Wanwan Sun Department of Endocrinology, Huashan Hospital, Fudan University, Shanghai, China

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Yi Wang Department of Endocrinology, Huashan Hospital, Fudan University, Shanghai, China

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Yawen Zhang Department of Endocrinology, Huashan Hospital, Fudan University, Shanghai, China

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Rumei Li Department of Endocrinology, Huashan Hospital, Fudan University, Shanghai, China

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Jinya Huang Department of Endocrinology, Huashan Hospital, Fudan University, Shanghai, China

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Yehong Yang Department of Endocrinology, Huashan Hospital, Fudan University, Shanghai, China

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DM. In order to further explore the epidemic and clinical characteristics that are distinctively related to islet autoantibodies in community patients with T2DM, we performed a cross-sectional study using the method of cluster sampling, with a total

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Yuerong Yan Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China

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Lili You Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China

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Xiaoyi Wang Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China

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Zhuo Zhang Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China

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Feng Li Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China

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Hongshi Wu Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China

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Muchao Wu Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China

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Jin Zhang Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China

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Jiayun Wu Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China

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Caixia Chen Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China

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Xiaohui Li Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China

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Biwen Xia Department of Endocrinology, The Fourth Affiliated Hospital of Guangzhou Medical University, Guangzhou, China

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Mingtong Xu Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China

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Li Yan Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China

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nutrition, thyroid goiter, and nodules among rural and urban residents in Guangzhou. Materials and methods Subjects A cross-sectional study was conducted in Guangzhou from 2015 to 2016. A rural sampling unit (county-level city) located in a

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Xi Cao Beijing Diabetes Institute, Beijing Tongren Hospital, Capital Medical University, Beijing, China

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Ming Lu Department of Endocrinology, Beijing Tongren Hospital, Capital Medical University, Beijing, China

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Rong-Rong Xie Beijing Diabetes Institute, Beijing Tongren Hospital, Capital Medical University, Beijing, China

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Li-Ni Song Department of Endocrinology, Beijing Tongren Hospital, Capital Medical University, Beijing, China

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Wei-Li Yang Beijing Diabetes Institute, Beijing Tongren Hospital, Capital Medical University, Beijing, China

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Zhong Xin Department of Endocrinology, Beijing Tongren Hospital, Capital Medical University, Beijing, China

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Guang-Ran Yang Department of Endocrinology, Beijing Tongren Hospital, Capital Medical University, Beijing, China

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Jin-Kui Yang Beijing Diabetes Institute, Beijing Tongren Hospital, Capital Medical University, Beijing, China

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DM patient sample. Materials and methods Population and study design This was a retrospective cross-sectional study analysis conducted at Beijing Tongren Hospital. Patients were recruited from June 2015 to January 2017 from the hospital

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