1. Department of Urology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
2. National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
3. Department of Urology, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, China
4. Department of Urology, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan 410013, China