1. Department of Urology, The First People's Hospital of Jing Zhou/The First Affiliated Hospital of Yangtze University, Jingzhou, Hubei 434000, P.R. China
2. Department of Urology, Ying Shan Hospital of Traditional Chinese Medicine, Ying Shan, Hubei 438700, P.R. China
3. Department of Urology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China