1 Division of Neurology, Department of Pediatrics, University of Toronto, Toronto, Ontario, Canada; The Hospital for Sick Children, Toronto, Ontario, Canada.
2 Division of Developmental Pediatrics, Department of Pediatrics, University of Toronto, Toronto, Ontario, Canada; Holland Bloorview Kids Rehabilitation Hospital, Toronto, Ontario, Canada; Bloorview Research Institute, Toronto, Ontario, Canada.
3 Division of Neurology, Department of Pediatrics, University of Toronto, Toronto, Ontario, Canada; The Hospital for Sick Children, Toronto, Ontario, Canada; Neurosciences and Mental Health Program, SickKids Research Institute, Toronto, Ontario, Canada. Electronic address: steven.miller@sickkids.ca.