[1] Diakonhjemmet Hosp, Dept Rheumatol, Oslo, Norway
[2] Hosp Univ La Paz, Madrid, Spain
[3] Neil Betteridge Associates, London, England
[4] Univ Manchester, Sch Biol Sci, Ctr Musculoskeletal Res, Manchester, Lancs, England
[5] Chapel Allerton Hosp, Leeds Inst Rheumat & Musculoskeletal Med, Leeds, W Yorkshire, England
[6] Clin Univ St Luc, UCL, Brussels, Belgium
[7] Gaetano Pini Inst, Rheumatol, Milan, Italy
[8] KPMG LLP, Global Strategy Grp, London, England
[9] Univ Hosp Geneva, Dept Internal Med Specialties, Geneva, Switzerland
[10] Univ Utrecht, Utrecht, Netherlands
[11] Univ Cologne, Cologne, Germany
[12] Radboud Univ Nijmegen Med Ctr, Nijmegen, Netherlands
[13] Sint Maartensklin, Nijmegen, Netherlands
[14] Salisbury NHS Fdn Trust, Salisbury, Wilts, England
[15] Karolinska Inst, Rheumatol, Stockholm, Sweden
[16] Rigshosp, Ctr Rheumatol & Spine Dis, Copenhagen Ctr Arthrit Res, Copenhagen, Denmark
[17] Inst Rheumatol, Rheumatol Clin, Prague, Czech Republic
[18] Hosp Santa Maria, Lisbon, Portugal
[19] Karolinska Inst, Dept Med Solna, Resp Med Unit, Stockholm, Sweden
[20] Karolinska Inst, Ctr Mol Med, Stockholm, Sweden
[21] Karolinska Univ Hosp Solna, Karolinska Inst, Dept Resp Med & Allergy, Stockholm, Sweden
[22] Univ Paris 05, Hop Cochin, Rheumatol, Paris, France