1 Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University, No.81 Meishan Road, Hefei, Anhui 230032, China.
2 Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Meishan Road 81, Hefei, Anhui 230032, China.
3 Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University, No.81 Meishan Road, Hefei, Anhui 230032, China; Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Ministry of Education of the People's Republic of China, No 81 Meishan Road, Hefei, Anhui 230032, China; Anhui Provincial Key Laboratory of Population Health and Aristogenics, No 81 Meishan Road, Hefei, Anhui 230032, China. Electronic address: wanggenfu@ahmu.edu.cn.
4 Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University, No.81 Meishan Road, Hefei, Anhui 230032, China; Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Ministry of Education of the People's Republic of China, No 81 Meishan Road, Hefei, Anhui 230032, China; Anhui Provincial Key Laboratory of Population Health and Aristogenics, No 81 Meishan Road, Hefei, Anhui 230032, China; Center for Big Data, Population Health of IHM, Anhui Medical University, Meishan Road 81, Hefei, Anhui 230032, China. Electronic address: supuyu@ahmu.edu.cn.