1. Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
2. Musculoskeletal Research Unit, Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
3. The Royal Free Hospital NHS Foundation Trust, London, UK
4. Nuffield Department of Population Health, University of Oxford, Oxford, UK
5. Barts Health NHS Trust, London, UK
6. Bone and Joint Health, Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK