1 From the Departments of Neuroscience Drugs and Child Health (F.A., A.F., L.M.) and Experimental and Clinical Biomedical Sciences (E.F.), University of Florence; Neuroimmunology Laboratory (M.G.), IRCCS Mondino Foundation; and Neurology 2 Unit (A.B.), Internal Medicine Unit 2 (V.S., G.F.), and Neuroradiology Unit (E.F., M.M.), Careggi University Hospital, Florence, Italy.