1. State Key Laboratory of Stem Cell and Reproductive Biology Institute of Zoology Chinese Academy of Sciences Beijing China
2. University of Chinese Academy of Sciences Beijing China
3. NHC Key Lab of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research) Fudan University Shanghai China
4. Department of Gynecology and Obstetrics Peking University Third Hospital Beijing China
5. Department of Gynecology and Obstetrics The 306 Hospital of PLA Beijing China
6. Second Hospital Affiliated to Tianjin Medical University Tianjin China