Huacai Zhu1, Zhanping Xu2,3. 1. Department of Urology, Foshan Hospital of Traditional Chinese Medicine, Foshan, 528000, Guangdong, People's Republic of China. 2. Department of Urology, Foshan Hospital of Traditional Chinese Medicine, Foshan, 528000, Guangdong, People's Republic of China. xuzhanping2004@163.com. 3. Foshan Hospital of Traditional Chinese Medicine, Qinren Road 6#, Chancheng District, Foshan, 528000, Guangdong, People's Republic of China. xuzhanping2004@163.com.