1. Department of Neurology and Neurosurgery; McGill University; Montreal Canada
2. Department of Pediatrics; McGill University; Montreal Canada
3. Department of Human Genetics; McGill University; Montreal Canada
4. McGill University and Genome Quebec Innovation Centre; Montreal Canada
5. Department of Medical Genetics, Montreal Children's Hospital; McGill University Health Center; Montreal Canada
6. Child Health and Human Development Program; Research Institute of the McGill University Health Centre; Montreal Canada
7. Division of Medical Genetics, Department of Pediatrics; CHU Sainte-Justine and Université de Montréal; Montreal Canada
8. Montreal Neurological Institute; McGill University; Montreal Canada
9. Department of Human Genetics, Division of Medical Genetics; Emory University School of Medicine; Atlanta Georgia
10. Department of Pediatrics, Division of Pediatric Neurology; Emory University School of Medicine; Atlanta Georgia
11. Institute for Molecular Bioscience; The University of Queensland; St. Lucia Australia
12. Department of Neurology, Perelman School of Medicine; University of Pennsylvania; Philadelphia Pennsylvania
13. Division of Neurology; Children's Hospital of Philadelphia; Philadelphia Pennsylvania