1. Department of Population Health Sciences, School of Population Health and Environmental Sciences, King's College London, London SE1 1UL, United Kingdom
2. Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
3. Medical Gerontology, King's College London
4. Trauma Unit, University Hospital of Wales, Cardiff, United Kingdom
5. School of Health Sciences, University of Nottingham, Nottingham, United Kingdom
6. Department of Physical Therapy and Division of Orthopaedic Surgery, University of Alberta, Edmonton, Canada
7. Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, Maryland
8. Department of Population Health Sciences, School of Population Health and Environmental Sciences, King's College London
9. Faculty of Health and Society, Malmö University, Malmö, Sweden
10. John Walsh Centre for Rehabilitation Research, Kolling Institute of Medical Research, University of Sydney, Sydney, Australia
11. Royal College of Physicians Patient and Carer Network, London, United Kingdom