1. From the Department of Neurology (J. Moeller), Yale School of Medicine, New Haven, CT; Departments of Neurology and Pediatrics (E.G.-G.), University of California, San Francisco; Departments of Neurology and Pediatrics (F.W.F., S.K.K.), Children's Hospital of Philadelphia and University of Pennsylvania Perelman School of Medicine, Philadelphia; Department of Neurology (E.L.J.), Johns Hopkins School of Medicine, Baltimore, MD; Department of Neurology and Pediatric Institute (A. Kheder), Emory...