1 Segawa Memorial Neurological Clinic for Children (K.H., K.K., H.F., M.H.), Tokyo, Japan; Department of Neurosurgery (K.J.S.), Massachusetts General Hospital and Harvard Medical School, Boston; Department of Clinical Neuroscience (T.K., R.K.), Institute of Biomedical Sciences, Tokushima University, Japan; Medical Genetics Division (J.A.S., K.C.D.) and Neurology Division (J.A.S.), Hospital de Clínicas de Porto Alegre (HCPA); Graduate Program in Medicine: Medical Sciences and Internal Medicine Department (J.A.S.), Faculdade de Medicina, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil; Neurophysiology Division (J.F., J.D.), Hospital de Santo António, Centro Hospitalar Universitário do Porto; UniGene (J.F., J.D.), Instituto de Biologia Molecular e Celular, i3s Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal; Department of Diagnostic Radiology and Nuclear Medicine (T.H.), Gunma University Graduate School of Medicine, Japan; Department of Neurology (Y.I.), Gunma University Graduate School of Medicine, Japan; and Department of Neurology (L.J.O.), Massachusetts General Hospital, Charlestown.