Perfusion reduction in the absence of structural differences in cognitively impaired versus unimpaired RRMS patients. Hojjat S-P, Cantrell C G, Carroll TJ, Vitorino R, Feinstein A, Zhang L, Symons SP, Morrow SA, Lee L, O'Connor P, et al. Mult Scler. 2016 Feb 4. PMID: 26846987. Abstract CommentRecommendBookmarkWatch