1. Department of Obstetrics and Gynecology Peking University People's Hospital Beijing China
2. Beijing Key Laboratory of Female Pelvic Floor Disorders Beijing China
3. Department of Gynecology and Obstetrics Johns Hopkins University School of Medicine Baltimore Maryland USA
4. Department of Obstetrics and Gynecology Peking University First Hospital Beijing China
5. Department of Gynecology Peking University Cancer Hospital and Institute Beijing China
6. Department of Obstetrics and Gynecology Beijing Hospital Beijing China
7. Department of Obstetrics and Gynecology Zhengzhou University Third Hospital Zhengzhou China
8. Department of Obstetrics and Gynecology, Beijing Chaoyang Hospital Capital Medical University Beijing China
9. Department of Obstetrics and Gynecology Women and Children Health Hospital of Xiamen Xiamen China
10. Department of Obstetrics and Gynecology Women and Children Health Hospital of Gansu Lanzhou China
11. Department of Obstetrics and Gynecology Peking University Third Hospital Beijing China
12. Peking University Clinical Research Institute Peking University Medical Department Beijing China
13. Medical Informatics Center Peking University Medical Department Beijing China