1. Division of Graduate Entry Medicine and Health Sciences, University of Nottingham, Nottingham, UK
2. Faculty of Public Health, College of Health Science, the Saudi Electronic University, Riyadh, Saudi Arabia
3. Department of Endocrinology and Diabetes, University Hospitals Derby and Burton NHS Foundation Trust, Derby, UK
4. Division of Primary Care, University of Nottingham, Nottingham, UK
5. Health Economic Outcomes Research, Birmingham, UK
6. MRC-Versus Arthritis Centre for Musculoskeletal Ageing Research, University of Nottingham, NIHR, Nottingham BRC, University of Nottingham, UK