1. Faculty of Medicine and Health Sciences, University of East Anglia, Norwich, UK
2. Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
3. Department of Geriatric Rehabilitation, Robert-Bosch-Krankenhaus GmbH, Stuttgart, Germany
4. School of Medicine, University of Nottingham, Nottingham, UK
5. College of Medicine and Public Health, Flinders University, Adelaide, Australia
6. Flinders University, Adelaide, Australia
7. University of Oxford, Oxford, UK
8. College of Medicine and Health, University of Exeter, Exeter, UK
9. University of Exeter, Exeter, UK