1. Danish Epilepsy Center; Dianalund Denmark
2. Department of Clinical Genetics; University Hospital; Rigshospitalet; Copenhagen Denmark
3. Department of Neuropediatrics; Herlev Hospital; Herlev Denmark
4. Neurology Unit and Neurogenetic Laboratories; Meyer Children's Hospital; Florence Italy
5. Department of Neuropediatrics; Odense University Hospital Denmark; Odense Denmark
6. Department of Neuropediatrics; University Medical Center Schleswig-Holstein; Kiel Germany
7. Neurogenetics Group; Department of Molecular Genetics; VIB; Antwerp Belgium
8. Laboratory of Neurogenetics; Institute Born-Bunge; University of Antwerp; Antwerp Belgium
9. INSERM U 1127; The National Scientific Research Center UMR7225; University of Pierre and Marie Curie (Paris 6) UMR 1127; The Brain and Spinal Institute; University of Sorbonne; Paris France
10. Department of Pediatrics; Holbaek Hospital; Holbaek Denmark
11. Department of Neuropediatrics; University Medical Center Giessen and Marburg; Giessen Germany
12. Pediatric Neurology Clinic; Rigshospitalet; Copenhagen Denmark
13. Institute of Pediatric Neurology and Muscular Diseases; Department of Neuroscience; Rehabilitation; Ophthalmology; Genetics and Maternal-Infant Science; Institute of G. Gaslini; University of Genova; Genova Italy
14. Laboratory of Neurogenetics; Department of Neurosciences; Giannina Gaslini Institute; Genova Italy
15. Department of Medical and Molecular Genetics; King's College London; Guy's Hospital; London United Kingdom
16. Institute for Regional Health Research; University of Southern Denmark; Odense Denmark
17. Department of Cellular and Molecular Medicine; Johannsen Center for Functional Genome Research; University of Copenhagen; Wilhelm Copenhagen Denmark
18. Institute of Psychiatry, Psychology and Neuroscience; King's College London; London United Kingdom
19. Division of Neurology; The Children's Hospital of Philadelphia; Philadelphia Pennsylvania U.S.A