From the Departments of Pediatrics and Neurology/Neurosurgery (M.O.), McGill University, Montréal, Canada; Departments of Clinical Neurosciences, Psychiatry, Pediatrics, and Community Health Sciences (T.P.), Cumming School of Medicine, University of Calgary, Canada; Division of Neurology (L.B.), Children's Hospital of Philadelphia, PA; Neurology Department (S.P.), Southern California Permanente Medical Group, Kaiser Los Angeles; Rochester (E.M.G.), NY; Department of Neurology (D.G.), Charleston Area... (At 2019-09-10)