Grey matter damage in progressive multiple sclerosis versus amyotrophic lateral sclerosis: a voxel-based morphometry MRI study. Tavazzi E, Laganà M M, Bergsland N, Tortorella P, Pinardi G, Lunetta C, Corbo M, Rovaris M Neurol Sci. 2014 Sep 17. Epub 2014 Sep 17. PMID: 25228014. Abstract CommentRecommendBookmarkWatch