RT Journal Article SR Electronic T1 Oestrogen plus progestogen increased risk of breast cancer in postmenopausal women JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 172 OP 172 DO 10.1136/ebm.8.6.172 VO 8 IS 6 YR 2003 UL http://ebm.bmj.com/content/8/6/172.abstract AB