1. Department of NEUROFARBA, University of Florence, Florence, Italy
2. Section of Biostatistics, Department of Health Sciences, University of Genova, Genova, Italy
3. II Division, Department of Neurology, University of Campania Luigi Vanvitelli, Naples, Italy
4. Department of Neurology, Sant’Andrea Hospital, Rome, Italy
5. The Multiple Sclerosis Centre, Department of Neurosciences, Biomedicine and Movement, University Hospital of Verona, Verona, Italy
6. MS Center, Department of Neuroscience, City of Health and Science University Hospital of Turin, Turin, Italy
7. Department of Neurology, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health, University of Genoa, Genoa, Italy
8. Multiple Sclerosis Center, ASST Spedali Civili di Brescia, Montichiari Hospital, Brescia, Italy
9. MS Center, Bianchi Melacrino Morelli Great Metropolitan Hospital, Reggio Calabria, Italy
10. Neurology Unit, Ospedale dell’Angelo, Venezia Mestre, Italy
11. Department of Neurology, IRCCS Neuromed, Pozzilli, Italy
12. MS Center, I Division of Neurology, Department of Advanced Medical and Surgical Sciences, University of Campania Luigi Vanvitelli, Naples, Italy
13. MS Center, Santa Lucia Foundation IRCCS, Rome, Italy
14. Faculty of Medicine, Hacettepe University, Ankara, Turkey
15. MS Center, Tor Vergata University, Rome, Italy
16. Multiple Sclerosis Centre, Binaghi Hospital, ASL Cagliari, University of Cagliari, Cagliari, Italy
17. Multiple Sclerosis Center and Neurology Department IRCCS San Raffaele Hospital, Milan, Italy
18. BIND Department, University of Palermo, Palermo, Italy
19. MS Center, Institute Foundation G. Giglio, Cefalù, Italy
20. School of Medicine, Ondokuz Mayis University, Samsun, Turkey
21. MS Center, S. Paolo Hospital, Naples, Italy
22. Multiple Sclerosis Unit, University Hospital G. Rodolico, Catania, Italy
23. Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
24. Multiple Sclerosis Centre, ASST OVEST MI, Legnano Hospital, Legnano, Italy
25. Faculty of Medicine, Cerrahpasa University, Istanbul, Turkey
26. IRCCS Ospedale Policlinico San Martino, Genova, Italy
27. IRCCS Fondazione Don Carlo Gnocchi, Florence, Italy