[1] NIAMS, Translat Genet & Genom Unit, NIH, Bethesda, MD USA
[2] NHGRI, NIH, Bethesda, MD 20892 USA
[3] Univ Manchester, ARC Epidemiol Unit, Manchester, Lancs, England
[4] Cincinnati Childrens Hosp Med Ctr, Cincinnati, OH 45229 USA
[5] Univ Munster, Munster, Germany
[6] Ist Giannina Gaslini, Genoa, Italy
[7] Ist Giannina Gaslini, UO Pediat 2, Genoa, Italy
[8] Hacettepe Univ, Fac Med, Dept Pediat, Ankara, Turkey
[9] Emory Univ, Sch Med, Pediat Rheumatol, Atlanta, GA USA
[10] Cleveland Clin, Pediat Rheumatol, Cleveland, OH 44106 USA
[11] Univ Utah, Div Allergy Immunol & Pediat Rheumatol, Salt Lake City, UT USA
[12] Childrens Hosp Montefiore, Rheumatol, Bronx, NY USA
[13] Hosp Pediat Garrahan, Buenos Aires, DF, Argentina
[14] Stanford Univ, Med Ctr, Dept Pediat CCSR, Stanford, CA 94305 USA
[15] Univ Fed Sao Paulo, Pediat, Sao Paulo, Brazil
[16] PRCSG, Cincinnati, OH USA
[17] Univ Fed Rio de Janeiro, Pediat Rheumatol, Rio De Janeiro, Brazil
[18] Hosp Sick Children, Div Rheumatol, Toronto, ON, Canada
[19] UCL, Inst Child Hlth, London, England
[20] Hosp St Joan de Deu, Unitat Reumatol Pediat, Barcelona, Spain
[21] German Ctr Pediat & Adolescent Rheumatol, Garmisch Partenkirchen, Germany
[22] Childrens Hosp Dresden, Dresden, Germany
[23] Univ Aachen, Aachen, Germany
[24] Cincinnati Childrens Hosp, Div Rheumatol, Cincinnati, OH USA
[25] NHGRI, Inflammatory Dis Sect, NIH, Bethesda, MD 20892 USA
[26] UCL, Sch Med, Great Ormond St Hosp, London, England
[27] Univ Manchester, Arthrit Res UK Ctr Genet & Genom, Manchester, Lancs, England