1. Department of Urology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
2. Department of Urology, The Third Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
3. Department of Emergency, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
4. Department of Urology, The Second People's Hospital of Jingdezhen, Jingdezhen, Jiangxi 333000, P.R. China