Comparative analysis of first-year fingolimod and natalizumab drug discontinuation among Swedish patients with multiple sclerosis. Frisell T, Forsberg L, Nordin N, Kiesel C, Alfredsson L, Askling J, Hillert J, Olsson T, Piehl F Mult Scler. 2015 Apr 28. PMID: 25921036. Abstract CommentRecommendBookmarkWatch