RT Journal Article SR Electronic T1 Judy Wilkenfeld JF Tobacco Control JO Tob Control FD BMJ Publishing Group Ltd SP 284 OP 284 DO 10.1136/tc.2007.022491 VO 16 IS 4 A1 Matthew L Myers YR 2007 UL http://tobaccocontrol.bmj.com/content/16/4/284.abstract AB