1. Division of Pediatric Neurology Montreal Children's Hospital Departments of Neurology and Neurosurgery McGill University
2. Department of Neuropathology Montreal Neurological Institute McGill University
3. Departments of Neurology and Neurosurgery Montreal Neurological Institute McGill University
4. Department of Pediatrics Université de Montreal Hôpital Ste. Justine
5. Division of Pediatric Neurology Montreal Children's Hospital Departments of Neurology, Neurosurgery, and Pediatrics McGill University Montreal, Quebec, .