1. Unit of Child Neurology and Psychiatry, Department of Human Pathology in Adult and Developmental Age “Gaetano Barresi,” University of Messina, Messina, Italy
2. Department of Pediatrics, University of L'Aquila, L'Aquila, Italy
3. Department of Pediatrics, Cinquefrondi, Reggio Calabria, Italy
4. Department of Life, Health and Environmental Sciences, Pediatric Clinic, Coppito, L'Aquila, Italy
5. Department of Woman-Child, Unit of Child Neurology and Psychiatry, Ospedali Riuniti, University of Foggia, Foggia, Italy