1. Department of Andrology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, China
2. Division of Urology, Department of Surgery, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, Texas
3. Department of Urology, Fujian Provincial Hospital, Fuzhou, China
4. Center of Reproductive Medicine, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
5. Department of Urology, Northern Jiangsu People's Hospital, Yangzhou, China
6. Department of Urology, Zhongda Hospital, Southeast University, Nanjing, China
7. Department of Andrology, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
8. Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China