RT Journal Article SR Electronic T1 Point-of-purchase tobacco access and advertisement in food stores JF Tobacco Control JO Tob Control FD BMJ Publishing Group Ltd SP 451 OP 452 DO 10.1136/tobaccocontrol-2011-050221 VO 21 IS 4 A1 Hosler, Akiko Sugimoto A1 Kammer, Jamie Rochelle YR 2012 UL http://tobaccocontrol.bmj.com/content/21/4/451.abstract AB