RT Journal Article SR Electronic T1 Taking aspirin daily for at least 4 years reduces long-term risk of cancer death JF Evidence Based Nursing JO Evid Based Nurs FD BMJ Publishing Group Ltd and RCN Publishing Company Ltd SP 71 OP 71 DO 10.1136/ebn1165 VO 14 IS 3 A1 Elizabeth Ann Coleman YR 2011 UL http://ebn.bmj.com/content/14/3/71.abstract AB