From the Department of Neurology (J.H.V.), Mayo Clinic, Scottsdale, AZ; Division of Neurology (M.C.C.V.), NeuroDevelopmental Science Center, Akron Children’s Hospital, OH; Department of Neurology (C.B.O.), Johns Hopkins University School of Medicine, Baltimore, MD; Division of Neurology (R.G.R.), Barrow Neurological Institute at Phoenix Children’s Hospital, AZ; Department of Child Health and Neurology (R.G.R.), University of Arizona College of Medicine-Phoenix; Departments of Pediatrics (S.L.O.), Community Health Sciences, and Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Alberta; and Department of Neurology (S.L.O.), Alberta Children’s Hospital, Calgary, Canada.