1. Core Facility West China Hospital, Sichuan University Chengdu China
2. Department of Obstetrics and Gynecology West China Second University Hospital, Sichuan University Chengdu China
3. Medical Genetics Department, Prenatal Diagnostic Center West China Second University Hospital, Sichuan University Chengdu China
4. Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education Sichuan University Chengdu China
5. State Key Laboratory of Biotherapy and Cancer Center Sichuan University Chengdu China
6. Department of Obstetrics/Gynecology, Joint Laboratory of Reproductive Medicine (SCU‐CUHK), Key Laboratory of Obstetric, Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education West China Second University Hospital, Sichuan University Chengdu China