1. Department of Obstetrics & Gynecology, West China Second University Hospital, Sichuan, Chengdu, China
2. Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, China
3. Department of Physiology, West China School of Preclinical and Forensic Medicine, Sichuan University, Sichuan, Chengdu, China
4. Sichuan Environmental Protection Key Laboratory of Heavy Metals Pollution Control, Sichuan Academy of Environmental Sciences, Sichuan, Chengdu, China
5. Department of Infertility and Sterility ,Chengdu Women and Children's Central Hospital, Sichuan, Chengdu
6. The Joint Laboratory for Reproductive Medicine of Sichuan University -The Chinese University of Hong Kong, China
7. West China School of Medicine, Sichuan University, Sichuan, Chengdu, China