1. State Key Laboratory of Reproductive Medicine, Clinical Center of Reproductive Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
2. Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, Hefei 230022, China
3. Anhui Province Key Laboratory of Reproductive Health and Genetics, Anhui Medical University, Hefei, China