[1] Indiana Univ Sch Med, Dept Neurol, Indianapolis, IN 46202 USA
[2] Blank Childrens Hosp, Unity Point Hlth, Des Moines, IA USA
[3] Indiana Univ Sch Med, Indianapolis, IN 46202 USA
[4] Indiana Univ Sch Med, Dept Med & Mol Genet, Indianapolis, IN 46202 USA
[5] Indiana Univ Sch Med, Dept Pediat, Indianapolis, IN 46202 USA