1. CHU Sainte-Justine Research Center; Montréal H3T 1C5 Canada
2. Department of Pediatrics; Neurology and Neurosurgery; McGill University; Montreal H3A 1A4 Canada
3. Department of Neurology; Icahn School of Medicine at Mount Sinai; New York New York 10029
4. Verona Pediatrics; Verona New Jersey 07044
5. Division of Medical Genetics; Department of Pediatrics; Centre Hospitalier Universitaire de Sherbrooke; Sherbrooke J1H 5N4 Canada
6. Department of Pediatrics; Université de Montréal; Montreal H3T 1J4 Canada
7. Division of Genetics and Metabolism; All Children's Hospital; St-Petersburg Florida 33701
8. Department of Neurosciences; Université de Montréal; Montreal H3T 1J4 Canada
9. Carle Physician Group; Urbana Illinois 61802
10. Génétique Médicale; Hôpital Jean Verdier AP-HP; C.H.U. Paris Nord Bondy 93140 France
11. Service de Génétique Médicale; Hôpital Purpan; CHU Toulouse Toulouse 31059 France
12. Université Paul-Sabatier; Toulouse III, EA-4555 and Inserm U1056 Toulouse 31000 France
13. Baylor College of Medicine; Houston Texas 77030
14. Department of Neurogenetics; Kennedy Krieger Institute; Baltimore Maryland 21205
15. Children's Hospital of San Antonio San Antonio; Texas 78207
16. Division of Genetics and Genomic Medicine; Univerity of California-Irvine Medical Center; Orange California 92868
17. Manchester Centre for Genomic Medicine; Central Manchester University Hospitals NHS Foundation Trust; MAHSC; Saint Mary's Hospital; Manchester M13 9WL UK
18. Department of Obstetrics and Gynecology; Université de Montréal; Montreal H3T 1J4 Canada
19. Department of Biochemistry and Molecular Medicine; Université de Montréal; Montreal H3T 1J4 Canada