1. Reproductive Medicine Center, The Key Laboratory for Reproductive Medicine of Guangdong Province, The First Affiliated Hospital, SunYat-sen University, Guangzhou, China
2. Department of Reproductive Medicine, Henan Province People’s Hospital, Zhengzhou, China
3. Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
4. Department of Andrology, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
5. Department of Urology and Andrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
6. Department of Urology and Andrology, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Southern Medical University, Guangzhou, China
7. Department of Urology, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
8. Department of Urology, The Eastern Hospital of the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
9. Center for Reproductive Medicine, Guangdong Women and Children Hospital, Guangzhou, China
10. Department of Andrology, Guangzhou First People’s Hospital, School of Medicine, South China University of Technology, Guangzhou, China
11. Department of Andrology, Ganzhou People’s Hospital of Jiangxi Province, Ganzhou, China