1 Department of Urology, Institute of Urology, Peking University First Hospital, National Urological Cancer Center, Peking University, Beijing, China.
2 Department of Urology, Beijing Jiangong Hospital, Beijing, China.
3 Department of Urology, Emergency General Hospital, Beijing, China.
4 Department of Urology, The Capital Medical University Mi Yun Teaching Hospital, Beijing, China.
5 Department of Urology, Institute of Urology, Peking University First Hospital, National Urological Cancer Center, Peking University, Beijing, China - pineneedle@sina.com.