1. Leeds Institute of Rheumatic and Musculoskeletal Medicine, Leeds, and University of Oxford Oxford UK
2. Rheumazentrum Ruhrgebiet Ruhr‐Universität Bochum Germany
3. Complexo Hospitilario Universitario de A Coruña A Coruña Spain
4. University of Toronto Toronto Ontario Canada
5. Saint Vincent’s University Hospital Dublin Ireland
6. Nasonova Research Institute of Rheumatology Moscow Russia
7. Università degli Studi del Molise Campobasso Italy
8. Hospital Puerta de Hierro Majadahonda Madrid Spain
9. Hospital Universitario Central de Asturias Oviedo Spain
10. Saint Vincent’s University Hospital, Dublin, Ireland, and Uppsala University Hospital Uppsala Sweden
11. Leeds Institute of Rheumatic and Musculoskeletal Medicine and University of Leeds Leeds UK