Corresponding Author

Department of Maternal, Child and Adolescent Health, Scientific Research Center in Preventive Medicine, MOE Key Laboratory of Population Health Across Life Cycle, NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Anhui Provincial Key Laboratory of Population Health and Aristogenics, School of Public Health, Anhui Medical University, Hefei, China

Research Unit for Epidemiology, Department of Public Health, Aarhus University, Aarhus C, Denmark

Correspondence

Kun Huang, School of Public Health, Anhui Medical University, No 81 Meishan Road, Hefei 230032, China.

Email: wuweihk8028@163.com