RT Journal Article SR Electronic T1 Changes at Tobacco Control JF Tobacco Control JO Tob Control FD BMJ Publishing Group Ltd SP 321 OP 322 DO 10.1136/tc.2004.010017 VO 13 IS 4 A1 Chapman, S YR 2004 UL http://tobaccocontrol.bmj.com/content/13/4/321.abstract AB