PT - JOURNAL ARTICLE ED - , TI - Tobacco Control Online: <a href="http://www.tobaccocontrol.com">www.tobaccocontrol.com</a> DP - 2007 Apr 01 TA - Tobacco Control PG - 106--106 VI - 16 IP - 2 4099 - http://tobaccocontrol.bmj.com/content/16/2/106.short 4100 - http://tobaccocontrol.bmj.com/content/16/2/106.full SO - Tob Control2007 Apr 01; 16