1. Neurology Unit; Department of Clinical and Experimental Medicine; University of Pisa; Pisa Italy
2. Neurology Unit; Azienda Ospedaliera Brotzu Cagliari; Cagliari Italy
3. Department of Neurosciences; Ophthalmology; and Genetics; University of Genova; Genova Italy
4. Department of Neurological Sciences; University Federico II of Napoli; Napoli Italy
5. Neurodegenerative Diseases Center; Department of Medicine; University of Salerno; Salerno Italy
6. IDC Hermitage-Capodimonte; Napoli Italy
7. Neurology Unit; University of Torino; Torino Italy
8. Neurology Unit; Versilia Hospital; Lido di Camaiore Italy
9. Department of Public Health University; Clinical and Molecular Medicine; University of Cagliari; Cagliari Italy