1. NIHR BRC, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences (NDORMS), University of Oxford Oxford UK
2. Department of Trauma and Orthopaedic SurgeryStoke Mandeville Hospital Aylesbury UK
3. GREMPAL Research Group, Fundació Institut Universitari per a la Recerca a l'Atenció Primària de Salut Jordi Gol i Gurina (IDIAPJGol) and CIBERFes, Universitat Autonoma de Barcelona and Instituto de Salud Carlos III Barcelona Spain
4. Department of Metabolic MedicineLancaster Medical School, Lancaster University Lancaster UK
5. Department of MedicineCambridge Biomedical Campus Cambridge UK
6. MRC Lifecourse Epidemiology UnitUniversity of Southampton Southampton UK