RT Journal Article SR Electronic T1 Evidently…* JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 6 OP 6 DO 10.1136/ebm.13.1.6 VO 13 IS 1 A1 Lehman, Richard YR 2008 UL http://ebm.bmj.com/content/13/1/6.abstract AB