1. School of Health Sciences, University of Salford, UK
2. Private podiatrist, Dorset, UK
3. Faculty of Health Sciences, University of Southampton, UK
4. Department of Podiatry, Solent NHS Trust, UK
5. NIHR Leeds Biomedical Research Unit, Leeds Teaching Hospitals NHS Trust and Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, UK
6. NIHR Wellcome Trust Clinical Research Facility, University Hospital Southampton NHS Foundation Trust, UK
7. Department of Rheumatology, Royal Bournemouth/Christchurch Hospitals NHS Foundation Trust, UK
8. Department of Rheumatology, Royal Blackburn Hospital, UK