1. Child Neurology and Psychiatry Unit, Department of Clinical and Experimental Medicine, University of Catania
2. CNR-Institute for Polymers, Composites and Biomaterials IPCB; Catania
3. Centre for Inherited Metabolic Diseases, Department of Clinical and Experimental Medicine, University of Catania
4. Section of Neuroscience Department GF Ingrassia, University of Catania; Catania Italy