RT Journal Article SR Electronic T1 Introduction JF Tobacco Control JO Tob Control FD BMJ Publishing Group Ltd SP S25 OP S25 DO 10.1136/tc.4.suppl2.S25 VO 4 IS Suppl 2 A1 Jack E Henningfield YR 1995 UL http://tobaccocontrol.bmj.com/content/4/Suppl_2/S25.1.abstract AB