1. Division of Pediatric Neurology, Institute of Pediatrics, University of Catania, Catania, Italy, Department of Clinical Genetics and University Department of Pediatrics, Pediatric Neurology, Oxford Radcliffe Hospital, Oxford, U.K
2. Division of Pediatric Neurology, Institute of Pediatrics, University of Catania, Catania, Italy
3. Neuroimmunology Unit-DIBIT, Department of Biological and Technological Research, Department of Neurology, University of Milano, Milano, Italy