1. Department of Orthopedics, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, P. R. China
2. Department of Urology Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, P. R. China
3. Department of Orthopedic Oncology, Key Laboratory of Carcinogenesis and Translational Research, Ministry of Education, Peking University Cancer Hospital & Institute, Beijing 100000, P. R. China