1. School of Public Health, Harbin Medical University
2. National Centre for Non-Communicable Disease Control and Prevention, Chinese Centre for Disease Control and Prevention
3. School of Population Health, Faculty of Medicine and Health, University of New South Wales
4. National Clinical Research Centre for Cardiovascular Diseases, Fuwai Hospital Chinese Academy of Medical Sciences
5. Department of Orthopaedics, Beijing Shunyi District Hospital
6. Department of Orthopaedics, Beijing Hospital, National Centre of Gerontology; Institute of Geriatric Medicine, Chinese Academy of Medical Sciences
7. Department of Orthopaedics, Beijing Changping District Hospital
8. Department of Orthopaedics, Beijing Liangxiang Hospital
9. Department of Orthopaedics, Beijing Anzhen Hospital, Capital Medical University
10. Department of Orthopaedics and Traumatology, Beijing Jishuitan Hospital, Peking University Fourth School of Clinical Medicine