RT Journal Article SR Electronic T1 Aspirin given for up to 2 years after initial anticoagulant treatment reduces the risk of venous thromboembolism recurrence without increasing risk of major bleeding JF Evidence Based Nursing JO Evid Based Nurs FD BMJ Publishing Group Ltd and RCN Publishing Company Ltd SP 92 OP 93 DO 10.1136/eb-2012-100896 VO 16 IS 3 A1 Henry G Watson YR 2013 UL http://ebn.bmj.com/content/16/3/92.abstract AB