RT Journal Article SR Electronic T1 POP goes the power wall? Taking aim at tobacco promotional strategies utilised at retail JF Tobacco Control JO Tob Control FD BMJ Publishing Group Ltd SP 209 OP 210 DO 10.1136/tc.2004.009043 VO 13 IS 3 A1 T Dewhirst YR 2004 UL http://tobaccocontrol.bmj.com/content/13/3/209.abstract AB