RT Journal Article SR Electronic T1 Opinion editorials: the science and art of combining evidence with opinion JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 161 OP 164 DO 10.1136/eb-2012-100996 VO 18 IS 5 A1 Gregory P Marchildon A1 Jennifer Y Verma A1 Noralou Roos YR 2013 UL http://ebm.bmj.com/content/18/5/161.abstract AB