1. Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
2. Center for Reproductive Medicine, Cheeloo College of Medicine, Shandong University, Jinan, China
3. Key Laboratory of Reproductive Endocrinology of Ministry of Education, National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong Key Laboratory of Reproductive Medicine, Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, China
4. State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, China