1. Department of Orthopedic Surgery and Orthopedic Research Institute West China Hospital, Sichuan University Chengdu China
2. Department of Spine Surgery The People's Hospital of Guangxi Zhuang Autonomous Region Nanning China
3. State Key Laboratory of Oral Diseases, National Clinical Research Centre for Oral Diseases, West China Hospital of Stomatology, Sichuan University Chengdu China
4. Department of Spine Surgery Beijing Jishuitan Hospital Guizhou Hospital Guiyang China