Study Confirms Natalizumab Efficacy, Safety in Treating RRMS MPR, 17 Apr 2016 Accessed on 18 Apr 2016 from http://www.empr.com/aan-2016-multiple-sclerosis/study-confirms-natalizumab-efficacy-safety-in-treating-rrms/article/487735/. CommentRecommendBookmarkWatch