[1] Univ North Carolina Chapel Hill, Dept Neurol, Chapel Hill, NC 27599 USA
[2] Univ Arizona, Dept Child Hlth & Neurol, Coll Med, Phoenix, AZ USA
[3] Baylor Coll Med, Div Crit Care Med, Houston, TX USA
[4] Baylor Coll Med, Div Child Neurol, Houston, TX USA
[5] Baylor Coll Med, Dept Pediat, Div Dev Neurosci, Houston, TX USA
[6] Western Univ, Schulich Sch Med & Dent, Dept Clin Neurol Sci, London, ON, Canada
[7] Phoenix Childrens Hosp, Surg & Trauma, Phoenix, AZ USA
[8] Univ Toronto, Hosp Sick Children, Dept Paediat, Div Neurol, Toronto, ON, Canada
[9] Harvard Med Sch, Boston Childrens Hosp, Dept Neurol, Boston, MA USA
[10] Moberg Analyt Inc, Philadelphia, PA 19107 USA
[11] Cent Michigan Univ, Childrens Hosp Michigan, Mt Pleasant, MI 48859 USA
[12] Kings Coll London, Sch Biomed Engn & Imaging Sci, London, England
[13] Kennedy Krieger Inst, Dept Neuropsychol, Baltimore, MD USA
[14] Johns Hopkins Univ Sch Med, Dept Psychiat & Behav Sci, Baltimore, MD USA