RT Journal Article SR Electronic T1 A hard road: finding ways to reduce teen tobacco use JF Tobacco Control JO Tob Control FD BMJ Publishing Group Ltd SP 1 OP 2 DO 10.1136/tc.9.1.1 VO 9 IS 1 A1 CHARYN D SUTTON YR 2000 UL http://tobaccocontrol.bmj.com/content/9/1/1.abstract AB