Contribution of spinal cord biopsy to diagnosis of aquaporin-4 antibody positive neuromyelitis optica spectrum disorder. Ringelstein M, Metz I, Ruprecht K, Koch A, Rappold J, Ingwersen J, Mathys C, Jarius S, Brück W, Hartung H-P, et al. Mult Scler. 2013 Nov 5. PMID: 24192218. Abstract CommentRecommendBookmarkWatch