1. Department of Geriatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
2. Healthcare of Older People, Queens Medical Centre, Nottingham University Hospitals NHS Trust, Nottingham, UK
3. Medical Research Council and Versus Arthritis Centre for Musculoskeletal Ageing Research, University of Birmingham and University of Nottingham, Nottingham, UK
4. National Institute for Health Research Nottingham Biomedical Research Centre: Musculoskeletal Disease theme, Nottingham, UK
5. Department for Assessment and Evaluation, Institute for Medical Education, University of Bern, Bern, Switzerland
6. University Hospitals Dorset, Bournemouth, UK
7. Clinical Research Unit (BUCRU) Faculty of Health and Social Sciences, Bournemouth, Dorset, UK