1. Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
2. Division of Spine, Department of Orthopedics, Tongji Hospital affiliated to Tongji University School of Medicine, Shanghai, China
3. Tongji University School of Medicine, Shanghai, China
4. Department of Orthopedics, Shanghai General Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
5. Department of Pathology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
6. Tongji University Cancer Center, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
7. Department of Radiotherpy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China