[1] Univ Leeds, Leeds Inst Rheumat & Musculoskeletal Dis, Leeds, W Yorkshire, England
[2] Catholic Univ Sacred Hearth, Fdn Policlin Univ A Gemelli, Div Rheumatol, Rome, Italy
[3] Leeds Teaching Hosp NHS Trust, NIHR Leeds Biomed Res Ctr, Leeds, W Yorkshire, England
[4] Countess Chester Hosp NHS Fdn Trust, Dept Rheumatol, Liverpool, Merseyside, England
[5] York Teaching Hosp NHS Fdn Trust, Dept Rheumatol, York, N Yorkshire, England
[6] Univ Manchester, Salford Royal NHS Fdn Trust, Manchester Acad Hlth Sci Ctr, Ctr Musculoskeletal Res, Manchester, Lancs, England
[7] Luton & Dunstable Univ Hosp NHS Fdn Trust, Dept Rheumatol, Luton, Beds, England
[8] South Tyneside & Sunderland NHS Fdn Trust, Dept Rheumatol, Sunderland, Durham, England
[9] Dudley Grp NHS Fdn Trust, Dept Rheumatol, Dudley, England
[10] Royal Free London NHS Fdn Trust, Dept Rheumatol, London, England
[11] Univ Hosp Birmingham NHS Fdn Trust, Dept Rheumatol, Birmingham, W Midlands, England
[12] Bradford Teaching Hosp NHS Fdn Trust, St Lukes Hosp, Dept Rheumatol, Bradford, W Yorkshire, England