1. Department of Urology, Institute of Urology, Gansu Nephro-Urological Clinical Center, Key Laboratory of Urological Diseases in Gansu Province, The Second Hospital of Lanzhou University, Lanzhou, Gansu 730030, China
2. Department of Neurosurgery, The Neurosurgery Clinical Medical Center, The Second Hospital of Lanzhou University, Lanzhou, Gansu 730030, China
3. Department of Urology, First Affiliated Hospital of Anhui Medical University and Institute of Urology, Anhui Medical University, Hefei, Anhui, China
4. First Clinical Medical College of Lanzhou University, Lanzhou, Gansu 730000, China
5. Department of General Surgery, Lanzhou University Second Hospital, Lanzhou 730030, China
6. Orthopaedics Key Laboratory of Gansu Province, Department of Orthopaedics, The Second Hospital of Lanzhou University, Lanzhou, Gansu, China
7. Department of Cardiology, Lanzhou University Second Hospital, Lanzhou 730030, China