1. U.S. Department of Health and Human Services. The health consequences of smoking—50 years of progress: a report of the Surgeon General. Atlanta: U.S. Department of Health and Human Services, Centers for Disease Control and Prevention, National Center for Chronic Disease Prevention and Health Promotion, Office on Smoking and Health; 2014. http://www.cdc.gov/tobacco/data_statistics/sgr/50th-anniversary/index.htm. Accessed February 29, 2016.
2. Annual healthcare spending attributable to cigarette smoking: an update;X Xu;Am J Prev Med,2015
3. The health care costs of smoking;JJ Barendregt;N Engl J Med,1997
4. AIHW. Tobacco smoking (NDSHS 2013 key findings). Canberra: Australian Government; Australian Institute of Health and Welfare; 2016. Available from: http://www.aihw.gov.au/alcohol-and-other-drugs/ndshs/2013/tobacco/. Accessed February 29, 2016.