1. Department of Epidemiology, Fudan University, Shanghai, China
2. Key Laboratory for Health Technology Assessment, National Commission of Health and Family Planning, Fudan University, Shanghai, China
3. Key Laboratory of Public Health Safety, Ministry of Education, School of Public Health, Fudan University, Shanghai, China
4. Department of Clinical Laboratory, Anqing Municipal Hospital, Anqing, China
5. Department of Obstetrics and Gynecology, Anqing Municipal Hospital, Anqing, China