1. Department of Obstetrics and Gynaecology, Assisted Reproduction Centre Shengjing Hospital Affiliated to China Medical University Shenyang China
2. Gynecology Clinic Shenyang Jianghua Hospital Shenyang China
3. Department of Reproductive Medical Center Guangdong Women and Children Hospital Guangzhou China
4. Key Laboratory of Reproductive Dysfunction Diseases and Fertility Remodelling of Liaoning Province Shengjing Hospital Affiliated to China Medical University Shenyang China