1. Reproductive Center Guangdong General Hospital, Guangdong Academy of Medical Science Guangzhou China
2. Department of Urology Guangzhou First People's Hospital, Guangzhou Medical University, the Second Affiliated Hospital of South China University of Technology Guangzhou China
3. Department of Andrology Zhongshan People's Hospital, Sun Yat‐sen University Zhongshan China
4. Laboratory of Electron Microscope Southern Medical University Guangzhou China
5. Department of Laboratory Medicine Guangzhou First People's Hospital, Guangzhou Medical University, the Second Affiliated Hospital of South China University of Technology Guangzhou China
6. Department of Pathology Guangzhou First People's Hospital, Guangzhou Medical University, the Second Affiliated Hospital of South China University of Technology Guangzhou China
7. Department of Pharmacy Guangzhou First People's Hospital, Guangzhou Medical University, the Second Affiliated Hospital of South China University of Technology Guangzhou China