1. Department of Urology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
2. Queen Mary School, Nanchang University, Nanchang, Jiangxi 330036, P.R. China
3. Department of Urology, Nanchang Hospital of Sun Yat‑Sen University, Nanchang, Jiangxi 330006, P.R. China