1. Department of Urology, Dongying People's Hospital, Dongying, Shandong 257091, P.R. China
2. Operation Room, Binzhou Medical University Hospital, Binzhou, Shandong 256600, P.R. China
3. Health Management Section and 4Department of Dermatology, Dongying People's Hospital, Dongying, Shandong 257091, P.R. China
4. Department of Dermatology, Dongying People's Hospital, Dongying, Shandong 257091, P.R. China