1. National Rheumatoid Arthritis Society, Maidenhead, United Kingdom
2. Nuffield Orthopaedic Centre, Oxford University Hospitals NHS Foundation Trust, Headington, United Kingdom
3. Faculty of Medicine, Dentistry and Health, University of Sheffield, United Kingdom
4. Department of Rheumatology, University Hospitals of Leicester, Leicestershire, United Kingdom
5. Bellevue Medical Centre, Birmingham, United Kingdom
6. Institute of Clinical Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
7. Gartnavel General Hospital and Queen Elizabeth University Hospital, Glasgow, United Kingdom