RT Journal Article SR Electronic T1 World Vapor Expo 2017: e-cigarette marketing tactics JF Tobacco Control JO Tob Control FD BMJ Publishing Group Ltd SP e81 OP e82 DO 10.1136/tobaccocontrol-2017-054128 VO 27 IS e1 A1 Ziyad Ben Taleb A1 Mohammad Ebrahimi Kalan YR 2018 UL http://tobaccocontrol.bmj.com/content/27/e1/e81.abstract AB