[1] Stanford Univ, Sch Med, Pediat Div Allergy, Palo Alto, CA 94304 USA
[2] Stanford Univ, Sch Med, Pediat Div Immunol, Palo Alto, CA 94304 USA
[3] Stanford Univ, Sch Med, Pediat Div Rheumatol, Palo Alto, CA 94304 USA
[4] Stanford Univ, Sch Med, Lucile Packard Childrens Hosp, Stanford PANS Clin & Res Program, Palo Alto, CA 94304 USA
[5] NIMH, Intramural Res Program, Bethesda, MD 20892 USA
[6] Stanford Univ, Sch Med, Dept Hlth Res & Policy, Stanford, CA 94305 USA
[7] Tufts Univ, Sch Med, Boston, MA 02111 USA
[8] Stanford Univ, Sch Med, Pediat Div Child Psychiat, Palo Alto, CA 94304 USA
[9] Stanford Univ, Sch Med, Pediat Div Adolescent Psychiat, Palo Alto, CA 94304 USA
[10] Stanford Univ, Sch Med, Lucille Packard Childrens Hosp, Pediat Otolaryngol Head & Neck Surg, Palo Alto, CA 94304 USA