1. Department of Pediatrics, University of Perugia, Perugia, Italy
2. Department of Pediatrics, University of L’Aquila, L’Aquila, Italy
3. Pediatric Neurology and Muscolar Diseases Unit, IRRCS Istituto Giannina Gaslini, Genova, Italy
4. Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health, University of Genova, Genova, Italy