1. Department of Joint Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
2. Institute of Bone and Joint Research, Kolling Institute, The University of Sydney, Sydney, NSW, Australia
3. Department of Rheumatology, Royal North Shore Hospital and Northern Clinical School, The University of Sydney, Sydney, NSW, Australia
4. Centre for Health, Exercise and Sports Medicine, Department of Physiotherapy, University of Melbourne, Melbourne, VIC, Australia
5. Division of Rheumatology, Allergy, and Immunology, Massachusetts General Hospital, Harvard School of Medicine, Boston, MA, USA