RT Journal Article SR Electronic T1 A series of evidence-based drug therapy letters improved prescribing behaviour JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 91 OP 91 DO 10.1136/ebm.10.3.91 VO 10 IS 3 YR 2005 UL http://ebm.bmj.com/content/10/3/91.abstract AB