RT Journal Article SR Electronic T1 Ximelagatran was not inferior to warfarin for preventing stroke and systemic embolism in non-valvular atrial fibrillation JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 110 OP 110 DO 10.1136/ebm.10.4.110 VO 10 IS 4 YR 2005 UL http://ebm.bmj.com/content/10/4/110.abstract AB