Affiliation: | 1. Department of Epidemiology and Biostatistics, School of Public Health, Capital Medical University, Beijing, China;2. Municipal Key Laboratory of Clinical Epidemiology, Beijing, China;3. Department of Nephrology, Institute of Nephrology and Urology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China;4. Health Medical Examination Center, Xuanwu Hospital, Capital Medical University, Beijing, China |