[1] Univ Hosp Geneva, Geneva, Switzerland
[2] Rigshosp, DANBIO, Copenhagen, Denmark
[3] Charles Univ Prague, Fac Med 1, Inst Rheumatol, Prague, Czech Republic
[4] Charles Univ Prague, Fac Med 1, Rheumatol, Prague, Czech Republic
[5] Lund Univ, Malmo, Sweden
[6] LUMC, Leiden, Netherlands
[7] Diakonhjemmet Hosp, Oslo, Norway
[8] Reuma Pt, Lisbon, Portugal
[9] Hosp Clin Barcelona, Barcelona, Spain
[10] Univ Bari, Bari, Italy
[11] Chu, Strasbourg, France
[12] Paris Sud Univ, Le Kremlin Bicetre, France
[13] Univ Occupat & Environm Hlth, Fukuoka, Japan
[14] Univ M, Inst Rhumatol Montreal, Chum, Montreal, PQ, Canada
[15] Univ Med & Pharm, Sf Maria Hosp, Dept Internal Med & Rheumatol, Bucharest, Romania