[1] Amsterdam Rheumatol & Immunol Ctr, Dept Rheumatol, Reade, Netherlands
[2] Vrije Univ Amsterdam, Med Ctr, Amsterdam, Netherlands
[3] Diakonhjemmet Hosp, Dept Rheumatol, Prevent Cardiorheuma Clin, Oslo, Norway
[4] Univ Glasgow, Inst Infect Immun & Inflammat, Coll Med Vet & Life Sci, Glasgow, Lanark, Scotland
[5] Vrije Univ Amsterdam, Internal & Vasc Med, Med Ctr, Amsterdam, Netherlands
[6] Diakonhjemmet Hosp, Dept Rheumatol, Oslo, Norway
[7] Paris Descartes Univ, Hop Cochin, Clin Epidemiol & Biostat,AP HP,INSERM, Dept Rheumatol,PRES Sorbonne Paris Cite,U1153, Paris, France
[8] Med Univ Vienna, Div Rheumatol, Dept Internal Med 3, Vienna, Austria
[9] IRCCS Galeazzi Orthoped Inst, Milan, Italy
[10] Univ Southern Denmark, Inst Reg Hlth Res, Odense, Denmark
[11] Hosp Southern Jutland, Sygehus Senderjylland, Aabenraa, Denmark
[12] King Christian 10s Hosp Rheumat Dis, Grasten, Denmark
[13] Umea Univ, Dept Publ Hlth & Clin Med Rheumatol, Umea, Sweden
[14] PARE Patient Res Partners, Sint Joris Weert, Belgium
[15] AGORA, Bucharest, Romania
[16] Univ Oslo, Oslo Univ Hosp, Ctr Prevent Med, Oslo, Norway
[17] Univ Oslo, Fac Med, Oslo, Norway
[18] Univ Gothenburg, Sahlgrenska Acad, Dept Rheumatol & Inflammat Res, Inst Med, Lund, Sweden
[19] Rheumatol Sect, Lund, Sweden
[20] Lund Univ, Dept Clin Sci Malmo, Lund, Sweden
[21] Univ Hosp Leuven, Dept Rheumatol, Leuven, Belgium
[22] Univ Cantabria, IDIVAL, Santander, Spain
[23] Diakonhjemmet Hosp, Dept Rheumatol, Prevent Cardiorheuma Clin, Oslo, Norway
[24] Univ Manchester, Russells Hall Hosp, Acad Affairs Dudley Grp NHS Fdn Trust, Arthrit Res UK Ctr Epidemiol,Clin Res Univ,Res &, Dudley, England
[25] Univ Debrecen, Dept Internal Med, Fac Med, Div Rheumatol, Debrecen, Hungary
[26] Univ Glasgow, Inst Cardiovasc & Med Sci, Glasgow, Lanark, Scotland
[27] Univ Manchester, Arthrit Res UK Ctr Epidemiol, Dept Rheumatol & Musculoskeletal Epidemol, Manchester, Lancs, England