1. Department of Human Reproductive Medicine Beijing Obstetrics and Gynecology Hospital, Capital Medical University Beijing People's Republic of China
2. Department of Human Reproductive Medicine Beijing Maternal and Child Health Care Hospital Beijing People's Republic of China
3. State Key Laboratory of Stem Cell and Reproductive Biology Institute of Zoology, Chinese Academy of Sciences Beijing People's Republic of China
4. Reproductive Medical Center The First Affiliated Hospital of Zhengzhou University Zhengzhou Henan People's Republic of China
5. Henan Key Laboratory of Reproduction and Genetics The First Affiliated Hospital of Zhengzhou University Zhengzhou Henan People's Republic of China
6. Department of Internal Medicine Beijing Obstetrics and Gynecology Hospital, Capital Medical University Beijing People's Republic of China
7. University of Chinese Academy of Sciences Beijing People's Republic of China
8. Department for Stem Cell and Regeneration Chinese Academy of Sciences Beijing People's Republic of China
9. Beijing Institute for Stem Cell and Regenerative Medicine Beijing People's Republic of China