Clinical effects of natalizumab on multiple sclerosis appear early in treatment course. Kappos L, O'Connor PW, Polman CH, Vermersch P, Wiendl H, Pace A, Zhang A, Hotermans C J Neurol. 2013 Jan 5. Epub 2013 Jan 05. PMID: 23292204. Abstract CommentRecommendBookmarkWatch