[1] West China School of Public Health and West China Fourth Hospital,Department of Epidemiology and Biostatistics, Institute of Systems Epidemiology, and West China
[2] Sichuan University,PUMC C. C. Chen Institute of Health
[3] Sichuan University,Department of Gynaecology, West China Women’s and Children’s Hospital
[4] Sichuan University,Laboratory of Molecular Translational Medicine, Center for Translational Medicine, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Department of Pediatrics, West China Women’s and Children