1. Department of Obstetrics and Gynecology; West China Second University Hospital, Sichuan University; Chengdu China
2. Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University); Ministry of Education; Chengdu China
3. Reproductive Endocrinology and Regulation Laboratory; West China Second University Hospital, Sichuan University; Chengdu China
4. West China Second University Hospital, Sichuan University; Chengdu China