1. Department of Urology, Tongji Hospital, Tongji Medical College Huazhong University of Science and Technology Wuhan Hubei 430030 P. R. China
2. Hubei Institute of Urology Wuhan Hubei 430030 P. R. China
3. Department of Urology The First Affiliated Hospital of Nanchang University Nanchang Jiangxi 330000 P. R. China
4. Department of Molecular and Medical Pharmacology, David Geffen School of Medicine University of California at Los Angeles Los Angeles CA 90095 USA
5. Department of Urology The First Affiliated Hospital of Xiamen University Xiamen Fujian 361003 P. R. China
6. Department of Urology The People's Hospital of Shenzhen City Shenzhen Guangdong 518020 P. R. China