1. Department of Oncology, Mianyang Third People's Hospital, Mianyang, Sichuan 621000, P.R. China
2. Department of General Surgery, Yulin Traditional Chinese Medicine Hospital, Yulin, Shaanxi 719000, P.R. China
3. Department of Urology Surgery, Yulin Traditional Chinese Medicine Hospital, Yulin, Shaanxi 719000, P.R. China