1. Biomedical Sciences Department, Institute for Biomedical Research and Innovation, National Research Council, Via Paolo Gaifami 18, 95026 Catania, Italy
2. Department of Drug and Health Sciences, University of Catania, 95125 Catania, Italy
3. Regional Reference Center for the Treatment and Control of Congenital Metabolic Diseases of Childhood, Department of Clinical and Experimental Medicine, University Hospital Policlinico “Rodolico-San Marco”, 95123 Catania, Italy
4. Unit of Rare Diseases of the Nervous System in Childhood, Section of Pediatrics and Child Neuropsychiatry, Department of Clinical and Experimental Medicine, University Hospital Policlinico “Rodolico-San Marco”, 95123 Catania, Italy