1. Rheumatology Department, University Hospital Southampton NHS Foundation Trust, Southampton, UK
2. Rheumatology Department, University Hospitals of Morecombe Bay NHS Foundation Trust, Lancaster, UK
3. Rheumatology Department, Mid Essex hospitals NHS Trust, Chelmsford, UK
4. MRC Lifecourse Epidemiology Unit, University of Southampton, Southampton, UK
5. Rheumatology Department, Salisbury District Hospital, Salisbury, UK
6. Arthritis Research UK Centre for Epidemiology, University of Manchester, Manchester, UK
7. National Rheumatoid Arthritis Society, Queen Alexandra Hospital, Portsmouth, UK
8. Rheumatology Department, Queen Alexandra Hospital, Portsmouth, UK