Cognitive functions in multiple sclerosis: impact of gray matter integrity. Llufriu S, Martinez-Heras E, Fortea J, Blanco Y, Berenguer J, Gabilondo I, Ibarretxe-Bilbao N, Falcon C, Sepulveda M, Sola-Valls N, et al. Mult Scler. 2013 Sep 4. PMID: 24005025. Abstract CommentRecommendBookmarkWatch