1. Department of Orthopaedics, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
2. Department of Orthopaedics, Peking University International Hospital, Beijing, China
3. Department of Orthopaedics, Peking Union Medical College Hospital, Chinese Academy of Medical Science, Peking Union Medical College, Beijing, China
4. Department of Orthopaedics, Chinese PLA General Hospital, Beijing, China
5. Department of Orthopaedic Surgery, Union Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan Shi, Hubei, China
6. Department of Spine Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangdong, China
7. Department of Spine Surgery, Drum Tower Hospital, Medical School of Nanjing University, Jiangsu, China
8. Department of Orthopaedics, Buddhist Tzu Chi General Hospital-Taipei Branch, Tzu Chi University, Hualien, Taiwan
9. Research Institution of Spinal Surgery, Six Affiliated Hospital of Xinjiang Medical University, Xinjiang Weiwuerzizhiqu, China
10. Department of Orthopaedics, Fuyang People’s Hospital, Anhui, China
11. Department of Orthopaedics, Air Force General Hospital of PLA, Beijing, China
12. Hospital of Orthopaedic Surgery, Guangzhou Military General Hospital, Guangdong, China
13. Department of Spine, Third Hospital of Hebei Medical University, Hebei, China
14. Department of Orthopaedics, Luohu People’s Hospital, Shenzhen, China
15. Department of Orthopaedics, Changhai Hospital, The Second Military Medical University, Yangpu Qu, Shanghai, China
16. Department of Orthopaedics, West China Hospital, Sichuan University, Sichuan, China
17. Department of Spine Surgery, The Affiliated Hospital of Guiyang Medical College, Guizhou, China
18. Department of Orthopaedic, Guizhou Provincial People’s Hospital, Guizhou, China
19. Department of Spine, Mianyang Orthopedic Hospital, Sichuan, China
20. Department of Spinal Surgery, The Second Affiliated Hospital of the Nanhua University, Chiayi, Hunan, China
21. Department of Orthopaedics, First People’s Hospital of Yunnan Province, Yunnan, China