RT Journal Article SR Electronic T1 An emerging consensus on grading recommendations? JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 2 OP 4 DO 10.1136/ebm.11.1.2-a VO 11 IS 1 A1 Guyatt, Gordon A1 Vist, Gunn A1 Falck-Ytter, Yngve A1 Kunz, Regina A1 Magrini, Nicola A1 Schunemann, Holger YR 2006 UL http://ebm.bmj.com/content/11/1/2.2.abstract AB