1. Département de Biologie Moléculaire; Institut de Pathologie et de Génétique; Gosselies Belgium
2. Département de Neurologie Pédiatrique; Université Libre de Bruxelles-Hôpital Erasme; Brussels Belgium
3. Department of Medical Genetics; The Children's Memorial Health Institute; Warszaw Poland
4. Translational Medicine & Neurogenetics; IGBMC; Illkirch France
5. Shriners Hospital Pediatric Research Center; Temple University Medical School; Philadelphia PA USA