[1] Univ Oxford, NDORMS, Oxford, England
[2] Fundacio Inst Univ Recerca Atencio Primaria Salut, Barcelona, Spain
[3] Univ West England, Fac Hlth & Appl Sci, Bristol, Avon, England
[4] Univ Leeds, Inst Rheumat & Musculoskeletal Med, Leeds, W Yorkshire, England
[5] NIHR Leeds Biomed Res Ctr, Leeds, W Yorkshire, England