RT Journal Article SR Electronic T1 Evidence-based policymaking in global health – the payoffs and pitfalls JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 97 OP 99 DO 10.1136/ebm.2011.100060 VO 16 IS 4 A1 Yamey, Gavin A1 Feachem, Richard YR 2011 UL http://ebm.bmj.com/content/16/4/97.abstract AB