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 610066, China.
2 NHC Key Laboratory of Male Reproduction and Genetics Guangdong Provincial Reproductive Science Institute (Guangdong Provincial Fertility Hospital), Guangzhou, Guangdong 510062, China.
3 Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, Hunan 410008, China.
4 Northwest Women's and Children's Hospital, Xian, Shaanxi 610045, China.
5 Department of Urology, Peking University Third Hospital, Beijing 100191, China.
6 Zhejiang Mater Child and Reproductive Health Center, Hangzhou, Zhejiang 310000, China.
7 Human Sperm Bank, Chongqing Research Institute for Population and Family Planning Science and Technology, Chongqing 401121, China.
8 Henan Human Sperm Bank, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450014, China.
9 Human Sperm Bank of National Research Institute for Family Planning, Beijing 100098, China.
10 Hubei Province Human Sperm Bank, Center for Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430010, China.
11 The First Affiliated Hospital of Guangxi Medical University, Guilin, Guangxi 530021, China.
12 The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China.
13 Department of Urological Surgery, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, China.
14 Anhui Provincial Human Sperm Bank, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230022, China.