1. Department of Orthopedic Surgery Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine Shanghai China
2. Sydney Musculoskeletal Health Kolling Institute of Medical Research, The University of Sydney Sydney New South Wales Australia
3. Institute of Endemic Diseases and Key Laboratory of Trace Elements and Endemic Diseases, National Health Commission of the People's Republic of China, School of Public Health Xi'an Jiaotong University Health Science Center Xi'an Shaanxi China
4. Centre for Health, Exercise and Sports Medicine, Department of Physiotherapy University of Melbourne Melbourne Victoria Australia
5. Division of Rheumatology, Allergy, and Immunology Massachusetts General Hospital, Harvard School of Medicine Boston Massachusetts USA
6. Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Botnar Research Centre University of Oxford Oxford UK