RT Journal Article SR Electronic T1 Resource reviews JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 189 OP 189 DO 10.1136/ebm.14.6.189 VO 14 IS 6 A1 Mahtani, Kamal R YR 2009 UL http://ebm.bmj.com/content/14/6/189.abstract AB