1 Multiple Sclerosis Center, Binaghi Hospital, ASL Cagliari, Cagliari, Italy.
2 Department of Neurology, Buffalo Neuroimaging Analysis Center, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo-The State University of New York, Buffalo, NY, USA.
3 Center for Biomedical Imaging, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo-The State University of New York, Buffalo, NY, USA.