Heng Li1, Yucong Zhang2, Hua Xu3. 1. Department of Urology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Institute of Urology of Hubei Province, Wuhan, China. 2. Department of Geriatrics, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China. 3. Cancer Precision Diagnosis and Treatment and Translational Medicine Hubei Engineering Research Center, Wuhan, China; Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China. Electronic address: xuhuawhu@163.com.