RT Journal Article SR Electronic T1 Challenge of communicating uncertainty in systematic reviews when applying GRADE ratings JF BMJ Evidence-Based Medicine JO BMJ EBM FD BMJ Publishing Group Ltd SP 125 OP 126 DO 10.1136/bmjebm-2018-110894 VO 23 IS 4 A1 Sten Anttila A1 Johannes Persson A1 Niklas Vareman A1 Nils-Eric Sahlin YR 2018 UL http://ebm.bmj.com/content/23/4/125.abstract AB