Association between beta-interferon exposure and hospital events in multiple sclerosis. Evans C, Zhu F, Kingwell E, Shirani A, van der Kop ML, Petkau J, Gustafson P, Zhao Y, Oger J, Tremlett H Pharmacoepidemiol Drug Saf. 2014 Nov; 23(11):1213-22. Epub 2014 Jun 21. PMID: 24953054. Abstract CommentRecommendBookmarkWatch