RT Journal Article SR Electronic T1 Basic learning concepts in EBM: the bidimentional hierarchy of evidence JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 83 OP 84 DO 10.1136/eb-2013-101610 VO 19 IS 3 A1 Pierre La Rochelle YR 2014 UL http://ebm.bmj.com/content/19/3/83.abstract AB