1. Division of Pediatric Neurology, Departments of Pediatrics, Neurology and Neurosurgery, Montreal Children's Hospital, Montreal, Canada
2. Laboratory of Neurogenetics of Motion, Montreal Neurological Institute and Hospital, McGill University, Montreal, Canada
3. Division of Medical Genetics, Department of Pediatrics, Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, Canada
4. Division of Pediatric Neurology, Department of Pediatrics, Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, Canada