1. Institute of Traumatic Orthopaedics of PLA; Medical Center of Assessment, Prevention and Treatment of Bone & Joint Diseases; Guangdong Key Laboratory of Orthopaedic Technology and Implant Materials; Key Laboratory of Trauma & Tissue Repair of Tropical Area of PLA, Hospital of Orthopaedics, Guangzhou General Hospital of Guangzhou Military Command; Guangzhou Guangdong 510010 P.R. China
2. Spine Surgery; Hospital of Orthopaedics, Guangzhou General Hospital of Guangzhou Military Command; Guangzhou Guangdong 510010 P.R. China
3. Neurosurgery; Hospital of Orthopaedics, Guangzhou General Hospital of Guangzhou Military Command; Guangzhou Guangdong 510010 P.R. China