1. Department of Urology; Zhongnan Hospital of Wuhan University; Wuhan P.R. China
2. Department of Urology; People's Hospital of Tuanfeng County; Hubei China
3. Department of Urology; People's Hospital of Wuhan University; Wuhan China
4. Departments of Biomedical Sciences and Surgery; Cooper Medical School of Rowan University; Camden New Jersey