[1] Univ Leeds, Leeds Inst Rheumat & Musculoskeletal Med, Chapel Allerton Hosp, NIHR Leeds Musculoskeletal Biomed Res Unit, Leeds, W Yorkshire, England
[2] West Suffolk Hosp, West Suffolk NHS Fdn Trust, Bury St Edmunds, Suffolk, England
[3] Royal Wolverhampton Trust, Cannock Chase Hosp, Rheumatol, Cannock, England
[4] pH Associates, Marlow, Bucks, England
[5] Peter Maddison Rheumatol Ctr, North Wales, Llandudno, Wales