1. Reproductive Medicine Center, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
2. National Health Commission Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Hefei, China
3. The First Affiliated Hospital of Anhui Medical University, Hefei, China
4. Comprehensive Research Center for Major Infectious Diseases of Anhui Province, Hefei, China
5. Ministry of Education of the People’s Republic of China, Hefei, China