1. General Orthopedics Department, Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing 100102, China
2. Key Laboratory of Beijing of Palasy Technology, Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing 100102, China
3. Spine Department 2, Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing 100102, China
4. Pathology Department, Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing 100102, China