1. Pediatric Neurology and Muscular Diseases Unit, Department of Neurosciences, Rehabilitation, Opthalmology, Genetics, Maternal and Child's Health, University of Genoa, Genoa, Italy
2. Pediatric Neurology and Muscular Diseases Unit, “G. Gaslini” Institute, Genoa, Italy
3. Department of Pediatrics, University of L’Aquila, L’Aquila, Italy