1. Department of Urology, The Second Hospital of Shanxi Medical University, Taiyuan, China
2. Second School of Clinical Medicine, Shanxi Medical University, Taiyuan, China
3. First School of Clinical Medicine, Shanxi Medical University, Taiyuan, China
4. School of Basic Medicine, Shanxi Medical University, Taiyuan, China
5. School of Public Health, Shanxi Medical University, Taiyuan, China