[1] Univ Amsterdam, Amsterdam Univ Med Ctr, Dept Clin Immunol & Rheumatol Amsterdam, Infect & Immun Inst, Amsterdam, Netherlands
[2] Hacettepe Univ, Fac Med, Dept Med, Div Rheumatol, Ankara, Turkey
[3] Univ Oxford, Nuffield Dept Orthopaed Rheumatol & Musculoskelet, Oxford, England
[4] Univ Calif San Diego, Dept Med, Div Rheumatol Allergy & Immunol, San Diego, CA 92103 USA
[5] State Univ Campinas Unicamp, Div Dermatol, Campinas, SP, Brazil
[6] Docente Adscrito Univ CES, Clin Las Amer Auna ARTMEDICA, Medellin, Colombia
[7] Katholieke Univ Leuven, Dept Rheumatol, Univ Clin Gasthuisberg, Leuven, Belgium
[8] Imperial Coll Healthcare NHS Trust, Dept Rheumatol, London, England
[9] Univ Glasgow, Inst Infect Immun & Inflammat, Glasgow, Lanark, Scotland
[10] Friedrich Alexander Univ Erlangen Nurnberg, Dept Internal Med Rheumatol & Immunol 3, Erlangen, Germany
[11] Univ Klinikum Erlangen, Erlangen, Germany
[12] Charite Univ Med Berlin, Hindenburgdamm 30, D-12203 Berlin, Germany
[13] Free Univ Berlin, Berlin, Germany
[14] Humboldt Univ, Dept Gastroenterol Infectiol & Rheumatol, Berlin, Germany