[1] Univ Leeds, Leeds Inst Rheumat & Musculoskeletal Med, Leeds, W Yorkshire, England
[2] Sheba Med Ctr, Dept Med B, Zabludowicz Ctr Autoimmune Dis, Tel Hashomer, Israel
[3] Tel Aviv Univ, Sackler Fac Med, Tel Aviv, Israel
[4] Leeds Teaching Hosp NHS Trust, Leeds, W Yorkshire, England