1 From the Multiple Sclerosis Program (R.V.), Department of Neurology, David Geffen School of Medicine, University of California, Los Angeles; and Department of Medical, Surgical Sciences, and Advanced Technologies (F.P.), G.F. Ingrassia, University of Catania, Italy. rvoskuhl@ucla.edu.
2 From the Multiple Sclerosis Program (R.V.), Department of Neurology, David Geffen School of Medicine, University of California, Los Angeles; and Department of Medical, Surgical Sciences, and Advanced Technologies (F.P.), G.F. Ingrassia, University of Catania, Italy.