RT Journal Article SR Electronic T1 Drugs Policy in Developing Countries JF Journal of Epidemiology and Community Health JO J Epidemiol Community Health FD BMJ Publishing Group Ltd SP 424 OP 424 DO 10.1136/jech.48.4.424 VO 48 IS 4 A1 David Stevenson YR 1994 UL http://jech.bmj.com/content/48/4/424.1.abstract AB