1. Department of Urology, Hunan Provincial People’s Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, Hunan Province, P.R. China
2. Hunan Provincial Institute of Geriatrics, Research Center for Lower Urinary Tract and Pelvic Floor Functional Diseases, Changsha, Hunan Province, P.R. China
3. Provincial Laboratory for Diagnosis and Treatment of Genitourinary System Disease, Department of Urology, Xiangya Hospital, Central South University, Changsha, Hunan Province, P.R. China