RT Journal Article SR Electronic T1 Who is the target? Package health warnings and the role of market segmentation JF Tobacco Control JO Tob Control FD BMJ Publishing Group Ltd SP 243 OP 244 DO 10.1136/tobaccocontrol-2018-054277 VO 27 IS 3 A1 Timothy Dewhirst A1 Wonkyong Beth Lee YR 2018 UL http://tobaccocontrol.bmj.com/content/27/3/243.abstract AB