RT Journal Article SR Electronic T1 Oestrogen plus progestin increased coronary heart disease and breast cancer in postmenopausal women JF Evidence Based Nursing JO Evid Based Nurs FD BMJ Publishing Group Ltd and RCN Publishing Company Ltd SP 20 OP 20 DO 10.1136/ebn.6.1.20 VO 6 IS 1 YR 2003 UL http://ebn.bmj.com/content/6/1/20.abstract AB