RT Journal Article SR Electronic T1 GRADE: assessing the quality of evidence for diagnostic recommendations JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 162 OP 163 DO 10.1136/ebm.13.6.162-a VO 13 IS 6 A1 Schünemann, Holger J A1 Oxman, Andrew D A1 Brozek, Jan A1 Glasziou, Paul A1 Bossuyt, Patrick A1 Chang, Stephanie A1 Muti, Paola A1 Jaeschke, Roman A1 Guyatt, Gordon H YR 2008 UL http://ebm.bmj.com/content/13/6/162.2.abstract AB