PT - JOURNAL ARTICLE ED - , TI - Correction AID - 10.1136/tobaccocontrol-2011-050283corr1 DP - 2014 Jan 01 TA - Tobacco Control PG - 87--87 VI - 23 IP - 1 4099 - http://tobaccocontrol.bmj.com/content/23/1/87.short 4100 - http://tobaccocontrol.bmj.com/content/23/1/87.full SO - Tob Control2014 Jan 01; 23