1. Department of Basic Medical Sciences, Neurosciences, and Sense Organs; University of Bari Aldo Moro; Bari Italy
2. Child Neuropsychiatry Unit, Department of Basic Medical Sciences, Neurosciences, and Sense Organs; University of Bari Aldo Moro; Bari Italy
3. Center for Outcomes Research and Clinical Epidemiology, CORESEARCH; Pescara Italy
4. Multiple Sclerosis Center, Sant'Antonio Abate Hospital; Gallarate Italy
5. Neurology Unit, Madonna delle Grazie Hospital; Matera Italy
6. Department of Neurosciences, Reproductive and Odontostomatological Sciences; University of Naples Federico II; Naples Italy
7. Department of Clinical Neuroscience; University of Palermo; Palermo Italy
8. Department of Advanced Medical and Surgical Sciences and Technologies, Multiple Sclerosis Center; University of Catania; Catania Italy
9. Department of Biomedical and Neuro Motor Sciences; University of Bologna; Bologna Italy
10. IRCCS Institute of Neurological Science and Bellaria Hospital; Bologna Italy
11. Department of Neurology; Virgin of Hope of Macarena University Hospital; Seville Spain
12. Interdepartment Multiple Sclerosis Research Center; C. Mondino National Institute of Neurology Foundation; Pavia Italy
13. International Center for Neurological Restoration; Havana Cuba
14. Multiple Sclerosis Center, Sant'Andrea Hospital, Department of Neurology and Psychiatry; Sapienza University; Rome Italy
15. Multiple Sclerosis Center, Umberto I Hospital; Sapienza University; Rome Italy
16. Division of Neurology, Department of Medicine; Amiri Hospital; Kuwait City Kuwait
17. Karadeniz Technical University; Trabzon Turkey
18. Neurology Unit, ASUR Marche Hospital; Macerata Italy
19. Operative Unit of Neurology, Dimiccoli General Hospital; Barletta Italy
20. Department of Neurosciences, Neurology Unit; University of Modena and Reggio Emilia, Sant'Agostino-Estense Hospital; Modena Italy
21. Multiple Sclerosis Center, II Division of Neurology, Department of Clinical and Experimental Medicine; Second University of Naples; Naples Italy
22. Multiple Sclerosis Center, Garibaldi-Nesima Hospital; Catania Italy
23. Department of Medical and Surgical Sciences; University of Foggia; Foggia Italy
24. Department of Public Health, Clinical and Molecular Medicine; University of Cagliari; Cagliari Italy
25. Multiple Sclerosis Center, Golestan Hospital; Ahvaz Jundishapur University of Medical Sciences; Ahvaz Iran
26. Multiple Sclerosis Center, Ospedali Riuniti; Foggia Italy
27. Department of Neurology, Notre Dame Hospital; Montreal Quebec Canada
28. Neurosciences Research Center and Department of Neurology; Isfahan University of Medical Sciences; Isfahan Iran
29. Aarhus University Hospital; Aarhus Denmark
30. Virgin of Valme University Hospital; Seville Spain
31. Department of Neurology, Box Hill Hospital; Monash University; Melbourne Victoria Australia
32. Department of Medicine at Royal Melbourne Hospital; University of Melbourne; Parkville Victoria Australia
33. Department of NEUROFARBA; University of Florence; Florence Italy
34. Department of Neurology; Vita-Salute San Raffaele University, San Raffaele Scientific Institute; Milan Italy