1. Reproductive Medical Center The First Affiliated Hospital of Zhengzhou University Zhengzhou Henan China
2. Henan Key Laboratory of Reproduction and Genetics The First Affiliated Hospital of Zhengzhou University Zhengzhou Henan China
3. Henan Provincial Obstetrical and Gynecological Diseases (Reproductive Medicine) Clinical Research Center The First Affiliated Hospital of Zhengzhou University Zhengzhou Henan China
4. State Key Laboratory of Stem Cell and Reproductive Biology Institute of Zoology Chinese Academy of Sciences Beijing China
5. Department of Reproductive Medicine The Second Hospital of Hebei Medical University Shijiazhuang Hebei China