1 Urology Department of the Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan Province, China.
2 Department of Respiratory and Critical Care Medicine of the Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan Province, China.
3 Urology Department of the Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan Province, China. Electronic address: 945933392zjs@sina.com.