3 Laboratory of Molecular Biology, Scientific Institute, IRCCS Eugenio Medea, Bosisio Parini, Lecco, Italy.
4 Section of Pediatric Neuroradiology, Division of Pediatric Radiology, Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins University School of Medicine, Baltimore, MD, USA.
5 Department of Neurogenetics, Kennedy Krieger Institute, Baltimore, MD, USA.
6 Neurogenetics Unit, IRCCS Fondazione Santa Lucia, Rome, Italy.
7 Department of Biological and Environmental Sciences, University of Messina, Messina, Italy.
8 Clinical Genetics Unit, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy.
9 Unit of Child Neurology and Psychiatry, IRCCS "C. Mondino" Foundation, Pavia, Italy.
10 Neurology Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy.
14 Institut für Humangenetik Essen, Universität Duisburg-Essen, Essen, Germany.
15 Unit of Child Neuropsychiatry Giannina Gaslini Institute, Genoa, Italy.
16 Department of Medicine and Surgery, University of Salerno, Salerno, Italy.
17 Practice of Human Genetics, Homburg (Saar), Germany.
18 Neuroradiology Unit, Giannina Gaslini Institute, Genoa, Italy.
19 Institute of Human Genetics, University of Münster, Münster, Germany.
20 Private Practice for Human Genetics, Augsburg, Germany.
21 Department of Human Genetics, University of Regensburg, Regensburg, Germany.
22 Department of Pediatric Neurology, University Children's Hospital, Zurich, Switzerland.
23 Neurogenetics Unit, IRCCS Fondazione Santa Lucia, Rome, Italy. enzamaria.valente@unipv.it.
24 Department of Molecular Medicine, University of Pavia, Pavia, Italy. enzamaria.valente@unipv.it.
25 Neuropsychiatry and Neurorehabilitation Unit, Scientific Institute, IRCCS Eugenio Medea, Via D. L. Monza 20, 23842 Bosisio Parini, Lecco, Italy. renato.borgatti@bp.lnf.it.