RT Journal Article SR Electronic T1 Perioperative management of anticoagulant and antiplatelet therapy JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP heartjnl-2016-310581 DO 10.1136/heartjnl-2016-310581 A1 Alfonso Tafur A1 James Douketis YR 2017 UL http://heart.bmj.com/content/early/2017/12/07/heartjnl-2016-310581.abstract AB