Positive year one results from Biogen Idec's Phase 3 advance trial of PLEGRIDY™ (peginterferon beta-1a) presented at AAN meeting Biogen Idec, 20 Mar 2013 Accessed on 21 Mar 2013 from http://www.biogenidec.com/PRESS_RELEASE_DETAILS.aspx?ID=5981&ReqId=1798258. CommentRecommendBookmarkWatch