1 From the Department of Pediatrics (Neurology) (E.A.Y.), SickKids Research Institute, Division of Neurosciences and Mental Health, Hospital for Sick Children, University of Toronto, Ontario, Canada; and Department of Paediatric Neurology (K.R.), Children's Hospital Datteln, Witten/Herdecke University, Germany. ann.yeh@sickkids.ca.
2 From the Department of Pediatrics (Neurology) (E.A.Y.), SickKids Research Institute, Division of Neurosciences and Mental Health, Hospital for Sick Children, University of Toronto, Ontario, Canada; and Department of Paediatric Neurology (K.R.), Children's Hospital Datteln, Witten/Herdecke University, Germany.