Maria A Rocca1, Judith U Harrer2, Massimo Filippi2. 1. From the Neuroimaging Research Unit (M.A.R., M.F.), Institute of Experimental Neurology, Division of Neuroscience, and Neurology Unit (M.A.R., M.F.), IRCCS San Raffaele Scientific Institute, Milan, Italy; Neurological Practice (J.U.H.), St. Ingbert; Department of Neurology (J.U.H.), RWTH Aachen University Hospital, Germany; and Vita-Salute San Raffaele University (M.F.), Milan, Italy. rocca.mara@hsr.it. 2. From the Neuroimaging Research Unit (M.A.R., M.F.), Institute of Experimental Neurology, Division of Neuroscience, and Neurology Unit (M.A.R., M.F.), IRCCS San Raffaele Scientific Institute, Milan, Italy; Neurological Practice (J.U.H.), St. Ingbert; Department of Neurology (J.U.H.), RWTH Aachen University Hospital, Germany; and Vita-Salute San Raffaele University (M.F.), Milan, Italy.