1. Gynecologic Department West China Second Hospital of Sichuan University Chengdu Sichuan China
2. Center for Translational Medicine Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, West China Second Hospital of Sichuan University Chengdu Sichuan China
3. Department of Radiology West China Second Hospital of Sichuan University Chengdu Sichuan China