1. Department of Gynecology The Third Affiliated Hospital of Guangzhou Medical University Guangzhou Guangdong China
2. Department of Gynecology Shanghai OB/GYN Hospital Fudan University Shanghai China
3. Shanghai Key Laboratory of Female Reproductive Endocrine‐Related Diseases Fudan University Shanghai China
4. MRC Centre for Reproductive Health University of Edinburgh The Queen's Medical Research Institute Edinburgh UK
5. Department of Ultrasound Imaging Shanghai OB/GYN Hospital Fudan University Shanghai China
6. Research Institute Shanghai OB/GYN Hospital Fudan University Shanghai China