1. Urologic Clinical Center of Gansu Province, Key Laboratory of Gansu Province, Institute of Urology, The Second Hospital of Lanzhou University, Lanzhou, China;
2. The Second Hospital of Tianjin Medical University, Tian Jin, China;
3. School of Basic Medical Sciences, Lanzhou University, Lanzhou, China;
4. The General Hospital of Tianjin Medical University, Tian Jin, China;
5. Department of Urology, University of Texas Health Science Center, San Antonio, Texas, USA