%0 Journal Article %A J. Slade %T High participation rates in cigarette brand promotions %D 1993 %R 10.1136/tc.2.3.248d %J Tobacco Control %P 248 %V 2 %N 3 %U https://tobaccocontrol.bmj.com/content/tobaccocontrol/2/3/248.4.full.pdf