1 Department of Urology and Institute of Urology, West China Hospital, Sichuan University, Chengdu, China; West China School of Medicine, Sichuan University, Chengdu, China.
2 Department of Pathology, West China Hospital, Sichuan University, Chengdu, China.
3 Department of Urology and Institute of Urology, West China Hospital, Sichuan University, Chengdu, China. Electronic address: yige.bao@scu.edu.cn.