[1] Univ Manchester, Manchester Acad Hlth Sci Ctr, Ctr Epidemiol Versus Arthrit, Fac Biol Med & Hlth, Manchester, Lancs, England
[2] King Fahad Mil Med Complex KFMMC, Dept Physiotherapy, Dhahran, Saudi Arabia
[3] Manchester Univ NHS Fdn Trust, Manchester Acad Hlth Sci Ctr, NIHR Manchester Biomed Res Ctr, Manchester, Lancs, England
[4] Salford Royal NHS Fdn Trust, Dept Rheumatol, Salford, Lancs, England
[5] Manchester Metropolitan Univ, Dept Hlth Profess, Manchester, Lancs, England
[6] Manchester United Ltd, Med, Manchester, Lancs, England