RT Journal Article SR Electronic T1 Review: oral anticoagulants plus antiplatelet agents reduce thromboembolism and all cause mortality for heart valve prostheses JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 147 OP 147 DO 10.1136/ebm.6.5.147 VO 6 IS 5 YR 2001 UL http://ebm.bmj.com/content/6/5/147.abstract AB