[1] Univ Hosp Bristol NHS Fdn Trust, Dept Rheumatol, Bristol, Avon, England
[2] Univ West England, Fac Hlth & Appl Sci, Bristol, Avon, England
[3] PMRGCA UK, London, England
[4] Univ Adelaide, Fac Hlth & Med Sci, Adelaide, SA, Australia
[5] Univ Leeds, Leeds Inst Rheumat & Musculoskeletal Med, Leeds, W Yorkshire, England
[6] Leeds Teaching Hosp NHS Trust, NIHR Biomed Res Ctr, Leeds, W Yorkshire, England
[7] Keele Univ, Sch Hlth & Rehabil, Keele, Staffs, England
[8] Univ East Anglia, Norwich Med Sch, Norwich, Norfolk, England