1. Department of Urology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
2. Department of Urology, First Hospital of Jilin University, Changchun, China
3. Department of Andrology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
4. Department of Urology, Peking University First Hospital, Peking University, Beijing, China
5. Department of Urology, Affiliated Hospital of the Qingdao University, Qingdao, China