[1] Cincinnati Childrens Hosp Med Ctr, PRCSG, Cincinnati, OH 45229 USA
[2] PRINTO, Genoa, Italy
[3] Univ Washington, Sch Med, Seattle, WA USA
[4] Univ Washington, Seattle Childrens Hosp, Seattle, WA 98195 USA
[5] Akron Childrens Hosp, Akron, OH USA
[6] Hamburger Zentrum Kinder & Jugendrheumatol, Dept Pediat Rheumatol, Hamburg, Germany
[7] Univ Utah, Dept Pediat, Salt Lake City, UT USA
[8] Tufts Med Ctr, Floating Hosp Children, Boston, MA USA
[9] Duke Univ, Med Ctr, Durham, NC USA
[10] Fak Nemocnice Motole, Prague, Czech Republic
[11] Randall Childrens Hosp Legacy Emanuel, Portland, OR USA
[12] Childrens Hosp Los Angeles, Los Angeles, CA 90027 USA
[13] Univ Paris 05, Hop Necker Enfants Malad, AP HP, IMAGINE Inst, Paris, France
[14] Kinderklin Charite, Otto Heubner Ctr, Berlin, Germany
[15] Asklepios Klin Sankt Augustin, St Augustin, Germany
[16] Asklepios Rheumazentrum Hamburg, Hamburg, Germany
[17] Arkansas Childrens Hosp, Little Rock, AR 72202 USA
[18] AbbVie Deutschland GmbH & Co KG, Ludwigshafen, Germany
[19] Univ Cincinnati, Dept Pediat, Cincinnati Childrens Hosp Med Ctr, Div Rheumatol, Cincinnati, OH USA
[20] PRINTO IRCCS, Genoa, Italy