1. Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430000, P.R. China
2. Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430000, P.R. China
3. Wuhan Yujian Biotechnology, Co. Ltd., Wuhan 430000, P.R. China
4. Ningxia Human Sperm Bank, Institute of Medical Sciences, General Hospital of Ningxia Medical University, Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, Ningxia Medical University, Yinchuan 750004, P.R. China
5. Hunan Provincial Key Laboratory of Regional Hereditary Birth Defects Prevention and Control, Changsha Hospital for Maternal & Child Health Care Affiliated to Hunan Normal University, Changsha 410007, P.R. China