RT Journal Article SR Electronic T1 The effect of publication bias magnitude and direction on the certainty in evidence JF BMJ Evidence-Based Medicine JO BMJ EBM FD BMJ Publishing Group Ltd SP 84 OP 86 DO 10.1136/bmjebm-2018-110891 VO 23 IS 3 A1 Mohammad Hassan Murad A1 Haitao Chu A1 Lifeng Lin A1 Zhen Wang YR 2018 UL http://ebm.bmj.com/content/23/3/84.abstract AB