[1] Univ Calif San Diego, Dept Pediat, Div Genet & Dysmorphol, San Diego, CA USA
[2] Rady Childrens Hosp, San Diego, CA USA
[3] Univ Calif San Diego, Dept Neurosci, La Jolla, CA USA
[4] Univ Calif San Diego, Dept Pediat, San Diego, CA USA
[5] Weill Cornell Med, Dept Pediat, Div Child Neurol, New York, NY USA