Balò's concentric sclerosis: still to be considered as a variant of multiple sclerosis? Pietroboni AM, Arighi A, De Riz MA, Ghezzi L, Calvi A, Avignone S, Scola E, Galimberti D, Triulzi F, Scarpini E Neurol Sci. 2015 Jun 25. Epub 2015 Jun 25. PMID: 26109007. Abstract CommentRecommendBookmarkWatch