RT Journal Article SR Electronic T1 Correction JF Tobacco Control JO Tob Control FD BMJ Publishing Group Ltd SP 329 OP 329 DO 10.1136/tobaccocontrol-2011-050331corr1 VO 21 IS 3 YR 2012 UL http://tobaccocontrol.bmj.com/content/21/3/329.3.abstract AB