1. Department of Urology, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Taiyuan, Shanxi, China.
2. Department of Anesthesiology, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Taiyuan, Shanxi, China.
3. Department of Urology, First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China.