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 1461 OP 1467 DO 10.1136/heartjnl-2016-310581 VO 104 IS 17 A1 Alfonso Tafur A1 James Douketis YR 2018 UL http://heart.bmj.com/content/104/17/1461.abstract AB