Osteoarthritis / Daniel Prieto-Alhambra, Senior Clinical Research Fellow, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, UK, Nigel Arden, Professor in Rheumatic Diseases, Director of Musculoskeletal Epidemiology and Biobank, University of Oxford and Southampton, UK, David J. Hunter, Florance and Cope Chair of Rheumatology and Professor of Medicine, Institute of Bone and Joint Research, Kolling Institute, University of Sydney and Royal North Shore Hospital, Australia.