1. Department of Medical Genetics, 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. Department of Obstetrics and Gynecology, West China Second University Hospital Sichuan University Chengdu China
4. 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