1 Sorbonne Université, UPMC Univ Paris 06, UMR S 1127, F-75013 Paris, France.
2 INSERM, U1127, F-75013 Paris, France.
3 CNRS, UMR 7225, F-75013 Paris, France.
4 Institut du Cerveau et de la Moelle épinière (ICM), Hôpital Pitié-Salpêtrière, F-75013 Paris, France.
5 Department of Genetics, Assistance Publique des Hôpitaux de Paris (AP-HP), Hôpital Pitié-Salpêtrière, F-75013 Paris, France.
6 Department of Clinical Neurosciences, University Hospitals and Medical School of Geneva, Geneva, Switzerland.
7 Department of Genetics, University Medical Center Utrecht, Utrecht, The Netherlands.
8 Service de Génétique, Hospices Civils de Lyon - GHE; CNRS UMR 5292, INSERM U1028, CNRL, et Université Claude Bernard Lyon 1, GHE, Lyon, France.
9 Pediatric Neurology, Neurogenetics, and Neurobiology Unit and Laboratories, A. Meyer Children's Hospital, Florence, Italy.
10 IRCCS, Istituto delle Scienze Neurologiche of Bologna; Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy.
11 Medical Genetics Unit, Polyclinic Sant' Orsola-Malpighi University Hospital, Bologna, Italy.
12 Department of Neurology-centre de référence des epilepsies rares, University Hospital of Strasbourg, Strasbourg, France.
13 Department of Pediatrics - centre de référence des épilepsies rares, University Hospital of Strasbourg, Strasbourg, France.
14 IGBMC, INSERM, CNRS, Strasbourg University, Strasbourg, France.
15 Department of Pediatric Neurosurgery, Fondation Rothschild, F-75013 Paris, France.
16 Department of Clinical and Experimental Epilepsy, UCL Institute of Neurology, WC1N 3BG, and Chalfont Centre for Epilepsy, Bucks, UK.
17 Stichting Epilepsie Instellingen Nederland, Zwolle/Heemstede, The Netherlands.
18 Leiden University Medical Center, Leiden, The Netherlands.
19 Department of Child Neurology, Brain Center Rudolf Magnus, University Medical Center, Utrecht, The Netherlands.
20 Department of Neurology, Academic Center for Epileptology Kempenhaeghe, Heeze, The Netherlands.
21 Danish Epilepsy Centre, Dianalund, University of Copenhagen, Copenhagen, Denmark.
22 Department of Neurology and Rehabilitation, Tallinn Children's Hospital, Tallinn, Estonia.
23 Danish Epilepsy Centre, Dianalund, Denmark.
24 Unit of Medical Genetics, CHU La Réunion, Saint Pierre F-97448, France.
25 Service de Génétique Médicale, Pavillon Lefebvre, Hôpital Purpan CHU Toulouse, Toulouse, France.
26 Institute of Neurology, Department of Medical and Surgical Sciences, University Magna Græcia, Catanzaro, Italy.
27 Epilepsy Center, Clinic of Nervous System Diseases, University of Foggia, Riuniti Hospital, Foggia, Italy.
28 Department of Pediatrics, Institute of Medicine, University Hospital of Udine, Udine, Italy.
29 Centre de Référence Anomalies du Développement et Syndromes Malformatifs et FHU TRANSLAD, CHU de Dijon et Université de Bourgogne, Dijon, France.
30 Service de neurophysiologie et pédiatrie 1, CHU de Dijon, Dijon, France.
31 Department of Paediatric Neurology, Motol University Hospital, 2nd faculty of medicine Charles University, Prague, Czech Republic.
32 Centre Hospitalier Universitaire de Rennes, F-35000 Rennes, France.
33 CHU Reims, Hôpital Maison Blanche, Pôle de Biologie, Service de Génétique, Reims F-51092, France.
34 CHU Reims, American Memorial Hospital, Service de Pédiatrie, Reims F-51092, France.
35 Department of Pediatric Neurology, Rady Children's Hospital/University of California, San Diego, CA, USA.
36 Service d'Epileptologie Clinique, CHU de Bordeaux, France.
37 Children's Hospital Los Angeles, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA.
38 Division of Genetics and Metabolism, Phoenix Children's Hospital, Phoenix, Arizona, USA.
39 Pediatric Neurology and Muscular Diseases Unit, Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health, University of Genoa, "G. Gaslini" Institute, Genova, Italy.
40 Department of Medicine, Divisions of Neurology and Respirology, Queen's University, Kingston, Ontario, Canada.
41 Kingston Health Sciences Centre, Kingston, Ontario K7L 2V7, Canada.
42 Pediatric Neurology Department, Timone Hospital, APHM, Marseille, France.
43 Department of Pediatric Neurology, Antwerp University Hospital, Edegem, Belgium.
49 Institute of Human Genetics, University Hospital, Magdeburg, Germany.
50 Epilepsy Center for Children, Brandenburg Medical School, University Hospital, Neuruppin, Germany.
51 Bethel Epilepsy Centre, Bielefeld, Germany.
52 Institute of Human Genetics, University of Leipzig Hospitals and Clinics, Leipzig, Germany.
53 Department of Pediatric Neurology and Developmental Medicine, University Children's Hospital, Tübingen, Germany.
54 Department of Pediatric Neurology, Children's Hospital Datteln, Witten/Herdecke University, Datteln, Germany.
55 Institut de Systématique, Evolution, Biodiversité, ISYEB, UMR 7205 CNRS MNHN UPMC EPHE, Paris, France.
56 The Saxon Epilepsy Center Kleinwachau, Radeberg, Germany.
57 Kinderneurologisches Zentrum, Düsseldorf-Gerresheim, Sana Kliniken, Düsseldorf, Germany.
58 Department of Neurology, F.M. Kirby Neurobiology Center, Boston Children's Hospital, Boston, Massachusetts, USA.
59 Division of Epilepsy and Clinical Neurophysiology and Epilepsy Genetics Program, Boston Children's Hospital, Boston, Massachusetts, USA.
60 Department of Neurology, Harvard Medical School, Boston, Massachusetts, USA.
61 Neurogenetics Group, VIB-Department of Molecular Genetics, University of Antwerp, Antwerp, Belgium.
62 Danish Epilepsy Centre, Dianalund; Institute for Regional Health research, University of Southern Denmark, Odense, Denmark.
63 Sorbonne Université, UPMC Univ Paris 06, UMR S 1127, F-75013 Paris, France. stephanie.baulac@upmc.fr.
64 INSERM, U1127, F-75013 Paris, France. stephanie.baulac@upmc.fr.
65 CNRS, UMR 7225, F-75013 Paris, France. stephanie.baulac@upmc.fr.
66 Institut du Cerveau et de la Moelle épinière (ICM), Hôpital Pitié-Salpêtrière, F-75013 Paris, France. stephanie.baulac@upmc.fr.
67 Department of Genetics, Assistance Publique des Hôpitaux de Paris (AP-HP), Hôpital Pitié-Salpêtrière, F-75013 Paris, France. stephanie.baulac@upmc.fr.
The original version of this article contained an error in the spelling of the author Erik H. Niks, which was incorrectly given as Erik Niks. This has now been corrected in both the PDF and HTML versions of the article.