RT Journal Article SR Electronic T1 Evidence-based pathology JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 132 OP 133 DO 10.1136/ebm.1997.2.132 VO 2 IS 5 A1 Kenneth A. Fleming YR 1997 UL http://ebm.bmj.com/content/2/5/132.abstract AB