Institution: | 1. Reproductive Medicine Center, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Anhui Medical University, Hefei 230022, China;2. Institute of Reproductive Genetics, Anhui Medical University, Hefei 230022, China;3. Anhui Provincial Engineering Technology Research Center for Biopreservation and Artificial Organs, Hefei 230022, China;4. National Research Institute for Family Planning, Beijing 100081, China |