[1] Univ Hosp Bern, Dept Rheumatol Immunol & Allergol, Inselspital, Bern, Switzerland
[2] Univ Birmingham, Inst Inflammat & Ageing, Coll Med & Dent Sci, Birmingham, W Midlands, England
[3] Univ Hosp Birmingham NHS Fdn Trust, Dept Rheumatol, Natl Inst Hlth Res NIHR Birmingham Biomed Res Ctr, Birmingham, W Midlands, England