IM interferon beta-1a delays definite multiple sclerosis 5 years after a first demyelinating event. Kinkel PR, Kollman C, O'Connor P, Murray T J, Simon J, Arnold D, Bakshi R, Weinstock-Gutman B, Brod S, Cooper J, et al. Neurology. 2006 Mar 14; 66(5):678-84. Epub 2006 Jan 25. PMID: 16436649. Abstract CommentRecommendBookmarkWatch