1. Health Canada (2005) Canadian Tobacco Use Monitoring Survey (CTUMS): Annual results 2004. Tobacco Control Program. Ottawa, Ontario: Health Canada, (http://www.hc-sc.gc.ca/hecs-sesc/tobacco/research/ctums/index.html)
2. Doll R, Peto R, Boreham J, Sutherland I (2004) Mortality in relation to smoking: 50 years’ observations on male British doctors. BMJ 26;328(7455):1519
3. Leatherdale ST, McDonald P (2005) What smoking cessation approaches will young smokers use? Addict Behav 30:1614–1618
4. Centers for Disease Control and Prevention (2001) Youth tobacco surveillance—United States, 2000. MMWR 50:1–84
5. U.S. Department of Health and Human Services (1994) Preventing tobacco use among young people: A Report of the Surgeon General. Atlanta, GA: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Center for Chronic Disease Prevention and Health Promotion, Office of Smoking and Health