RT Journal Article SR Electronic T1 Electronic cigarette advertising at the point-of-sale: a gap in tobacco control research JF Tobacco Control JO Tob Control FD BMJ Publishing Group Ltd SP e110 OP e112 DO 10.1136/tobaccocontrol-2013-051337 VO 24 IS e1 A1 Ollie Ganz A1 Jennifer Cantrell A1 Joyce Moon-Howard A1 Angela Aidala A1 Thomas R Kirchner A1 Donna Vallone YR 2015 UL http://tobaccocontrol.bmj.com/content/24/e1/e110.abstract AB