1. Pediatric Neurology Unit, “A.O.U. Pisana” University Hospital of Pisa, Pisa, Italy
2. Department of Neurology, University of Siena, Siena, Italy
3. Pediatric Department, “A.O.U. Pisana”, University Hospital of Pisa, Pisa, Italy
4. Pediatric Neurology and Muscular Diseases Unit, IRCCS “G. Gaslini” Institute, Genova, Italy
5. Department Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health University of Genoa, Genova, Italy