1 Department of Urology, The Second Affiliated Hospital of Kunming Medical University, Yunnan Institute of Urology, Kunming 650101, China.
2 Department of Urology, The First People's Hospital of Longquanyi District, Chendu 610000, China.
3 Department of Urology, The Second Affiliated Hospital of Kunming Medical University, Yunnan Institute of Urology, Kunming 650101, China. Electronic address: highphone@126.com.
4 Department of Urology, The Second Affiliated Hospital of Kunming Medical University, Yunnan Institute of Urology, Kunming 650101, China. Electronic address: wangjiansong@kmmu.edu.cn.