1. Department of Anesthesiology, Xinle Hospital, Shijiazhuang 050700, Hebei, China
2. Room of Operating, Xinle Hospital, Shijiazhuang 050700, Hebei, China
3. Department of Urology, Xinle Hospital, Shijiazhuang 050700, Hebei, China
4. Department of Urology, Hebei Hospital of Traditional Chinese Medicine, Shijiazhuang 050700, Hebei, China
5. Department of Anesthesiology, The Third Hospital of Hebei Medical University, Shijiazhuang 050051, Hebei, China