1. University of Bern Department of Geriatrics, Inselspital, Bern University Hospital, , Bern, Switzerland
2. Nottingham University Hospitals NHS Trust Healthcare of Older People, Queens Medical Centre, , Nottingham, UK
3. University of Birmingham and University of Nottingham Medical Research Council and Versus Arthritis Centre for Musculoskeletal Ageing Research, , Nottingham, UK
4. National Institute for Health and Care Research Nottingham Biomedical Research Centre for Musculoskeletal Disease theme , Nottingham, UK