[1] Childrens Hosp Orange Cty, Div Neurol, 1201 W La Veta Avenue, Orange, CA 92868 USA
[2] Massachusetts Gen Hosp Children, Boston, MA USA
[3] Univ Rochester, Rochester, NY USA
[4] Childrens Hosp Philadelphia, Philadelphia, PA USA
[5] Nationwide Childrens Hosp, Columbus, OH USA
[6] Kennedy Krieger Inst, Baltimore, MD USA
[7] Harvard Med Sch, Boston, MA USA
[8] Univ Missouri, Sch Med, Columbia, MO USA
[9] Univ Alberta, Edmonton, AB, Canada
[10] Vanderbilt Univ, Med Ctr, Nashville, TN USA