1. Division of Neurology, Department of Clinical and Biological Sciences, University of Turin, San Luigi Gonzaga University Hospital, Orbassano, Italy
2. Biostatistics Unit, Department of Health Sciences, University of Genoa, Genoa, Italy
3. Department of Oncology, University of Turin, San Luigi Gonzaga University Hospital, Orbassano, Italy
4. Department of Neurosciences, Reproductive, and Odontostomatological Sciences, Federico II University of Naples, Naples, Italy
5. Department of Neurology II, Center of Multiple Sclerosis, Azienda Ospedaliera Sant’Antonio Abate Hospital, Gallarate, Italy
6. Section of Neurology, Department of Experimental Biomedicine and Clinical Neuroscience, University of Palermo, Palermo, Italy
7. Neurology Unit, Department of Neurosciences, University of Modena and Reggio Emilia, Modena, Italy
8. Division of Neurology and Multiple Sclerosis Center, Department of Neurosciences, University of Turin, Città della Salute e della Scienza University Hospital, Turin, Italy
9. Department of Neuroscience and Sense Organs, University of Bari, Bari, Italy