[1] Washington Univ, Dept Neurol, St Louis, MO 63110 USA
[2] Childrens Hosp Orange Cty, Neurol Div, Orange, CA 92668 USA
[3] Univ Calif Orange, Dept Pediat, Orange, CA USA
[4] George Washington Univ, Childrens Natl Med Ctr, Sch Med, Dept Neurol, Washington, DC USA
[5] Stanford Stroke Ctr, Dept Neurol, Div Child Neurol, Palo Alto, CA USA
[6] Seattle Childrens Hosp, Dept Neurol, Seattle, WA USA
[7] Seattle Childrens Hosp, Dept Neurol Surg, Seattle, WA USA
[8] Washington Univ, Dept Pediat, St Louis, MO 63130 USA
[9] Washington Univ, Dept Radiol, St Louis, MO 63130 USA