[1] NIH, Bldg 10, Bethesda, MD 20892 USA
[2] NIAMS, NIH, Bethesda, MD USA
[3] Vall dHebron Hosp, Barcelona, Spain
[4] St Pau Hosp, Barcelona, Spain
[5] New York Univ Langone Hlth, Div Rheumatol, New York, NY USA
[6] Med Coll Wisconsin, Dept Pediat, Div Rheumatol, Washington, DC USA
[7] NIEHS, Environm Autoimmun Grp, Clin Res Branch, NIH, Garrett Pk, MD USA
[8] Johns Hopkins Univ, Baltimore, MD USA