PT - JOURNAL ARTICLE ED - , AID - 10.1136/tc.12.1.12 DP - 2003 Mar 01 TA - Tobacco Control PG - 12--12 VI - 12 IP - 1 4099 - http://tobaccocontrol.bmj.com/content/12/1/12.short 4100 - http://tobaccocontrol.bmj.com/content/12/1/12.full SO - Tob Control2003 Mar 01; 12