[1] Univ Colorado, Dept Pediat, Sch Med, Anschutz Med Campus, Aurora, CO USA
[2] Univ Colorado, Dept Neurol, Sch Med, Anschutz Med Campus, Aurora, CO USA
[3] Mayo Clin, Div Child & Adolescent Neurol, Dept Neurol, 200 First St SW, Rochester, MN 55902 USA
[4] Mayo Clin, Div Epilepsy, Dept Neurol, 200 First St SW, Rochester, MN 55902 USA