RT Journal Article SR Electronic T1 Health systems: how much difference can they make to health inequities? JF Journal of Epidemiology and Community Health JO J Epidemiol Community Health FD BMJ Publishing Group Ltd SP 635 OP 636 DO 10.1136/jech-2015-207071 VO 70 IS 7 A1 Frances E Baum YR 2016 UL http://jech.bmj.com/content/70/7/635.abstract AB