[1] Med Univ S Carolina, Childrens Res Inst, Charleston, SC 29425 USA
[2] Univ Missouri, Dept Psychol, Columbia, MO USA
[3] Wake Forest Univ, Sch Med, Dept Neurol, Winston Salem, NC 27109 USA
[4] Washington Univ, Sch Med, Dept Neurol, St Louis, MO 63130 USA
[5] Wake Forest Univ, Baptist Med Ctr, Winston Salem, NC 27109 USA
[6] Univ Connecticut, Sch Med, Farmington, CT USA
[7] Connecticut Childrens Med Ctr, Dept Pediat, Hartford, CT USA
[8] Connecticut Childrens Med Ctr, Div Pediat Neurol, Hartford, CT USA
[9] Harvard Univ, Sch Med, Massachusetts Gen Hosp, Dept Neurol & Psychiat, Boston, MA USA