RT Journal Article SR Electronic T1 Both a stage shift and changes in stage-specific survival have contributed to reductions in breast cancer mortality JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 76 OP 76 DO 10.1136/ebmed-2016-110632 VO 22 IS 2 A1 Stephen W Duffy A1 Ruth Etzioni A1 Peter Sasieni YR 2017 UL http://ebm.bmj.com/content/22/2/76.abstract AB