1. Neurological Clinic; University of Pisa; Pisa Italy
2. Neurological Clinic; University of Padova, and (C.A.) IRCCS S. Camillo; Venice Italy
3. Bambino Gesù Children's Research Hospital; Rome Italy
4. IRCCS Istituto delle Scienze Neurologiche di Bologna, Bellaria Hospital, Bologna, Italy and Department of Biomedical and Neuromotor Sciences (DIBINEM); University of Bologna; Bologna Italy
5. Dino Ferrari Center, Neuroscience Section, Department of Pathophysiology and Transplantation (DEPT); University of Milan, Neurology Unit, IRCCS Foundation Ca' Granda Ospedale Maggiore Policlinico; Milan Italy
6. Neuropediatric and Muscle Disorders Unit; University of Genoa and G. Gaslini Institute; Genoa Italy
7. Neuromuscular Unit-Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milano; Dino Ferrari Center University of Milan; Milan Italy
8. Department of Neuroscience; University of Turin; Turin Italy
9. Institute of Neurology, Catholic University; Rome Italy
10. Neurological Clinic; University of Verona; Verona Italy
11. Department of Neurosciences; University of Messina; Messina Italy
12. Child Neurology Unit; The Foundation “Carlo Besta” Institute of Neurology-IRCCS; Milan Italy
13. IRCCS Stella Maris; Pisa Italy
14. Neurological Institute, University of Brescia; Brescia Italy
15. Unit of Molecular Neurogenetics; The Foundation “Carlo Besta” Institute of Neurology-IRCCS; Milan Italy