RT Journal Article SR Electronic T1 Canada: industry excuses over health warnings JF Tobacco Control JO Tob Control FD BMJ Publishing Group Ltd SP 268 OP 268 DO 10.1136/tc.9.3.268g VO 9 IS 3 YR 2000 UL http://tobaccocontrol.bmj.com/content/9/3/268.8.abstract AB