We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleWarfarin versus aspirin for prevention of thromboembolism in atrial fibrillation: Stroke Prevention in Atrial Fibrillation II Study.PublicationLancet, 1994, Vol 343, Issue 8899, p687ISSN0140-6736Publication typearticleDOI10.1016/s0140-6736(94)91577-6