1. Human Sperm Bank, Key Laboratory of Birth Defects and Related Diseases of Women and Children of Ministry of Education, West China Second University Hospital Sichuan University Chengdu Sichuan China
2. NHC Key Laboratory of Male Reproduction and Genetics, Guangdong Provincial Reproductive, Science Institute, Guangdong Provincial Fertility Hospital Guangzhou Guangdong China
3. Reproductive and Genetic Hospital CITIC Xiangya Changsha Hunan China
4. Northwest Women and Children's Hospital Xian Shaanxi China
5. Department of Urology Peking University Third Hospital Beijing China
6. Zhejiang Mater Child and Reproductive Health Center Zhejiang Hangzhou China
7. Human Sperm Bank Chongqing Research Institute for Population and Family Planning Science and Technology Chongqing China
8. Henan Human Sperm Bank The Third Affiliated Hospital of Zhengzhou University Zhengzhou Henan China
9. Human Sperm Bank of National Research Institute for Family Planning Beijing China
10. Hubei Province Human Sperm Bank, Center for Reproductive Medicine, Tongji Medical College Huazhong University of Science and Technology Wuhan Hubei China
11. The First Affiliated Hospital of Guangxi Medical University Guilin Guangxi China
12. The First Affiliated Hospital of Nanjing Medical University Nanjing Jiangsu China
13. Department of Urological Surgery First Affiliated Hospital of Kunming Medical University Kunming Yunnan China
14. Anhui Provincial Human Sperm Bank The First Affiliated Hospital of Anhui Medical University Hefei Anhui China
15. Jiangxi University of Traditional Chinese Medicine Nanchang Jiangxi China
16. The First Affiliated Hospital of Zhengzhou University Zhengzhou Henan China
17. Human Sperm Bank of The First Hospital of Lanzhou University Lanzhou Gansu China
18. Sperm Bank, Shanxi Bethune Hospital Shanxi Academy of Medical Sciences Taiyuan Shanxi China
19. The First Hospital of Jilin University Jilin China
20. Obstetrics and Gynecology Hospital Fudan University Shanghai China
21. Maternal and Child Health Hospital of Urumqi Xinjiang China
22. The First Affiliated Hospital of Hainan Medical University Haikou Hainan China
23. Human Sperm Bank of Chifeng Gynecology and Obstetrics Hospital Chifeng Inner Mongolia China
24. Liaoning Maternal and Child Health Hospital Shenyang Liaoning China
25. Laboratory of Molecular Translational Medicine, Center for Translational Medicine, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), West China Second University Hospital Sichuan University Chengdu Sichuan China