1. Smoking prevalence and attributable disease burden in 195 countries and territories, 1990-2015: a systematic analysis from the Global Burden of Disease Study 2015;Lancet,2017
2. NCHS. National Health Interview Survey. Prevalence of current cigarette smoking among adults aged 18 and over: United States, 1997–September 2017, Sample Adult Core component. Available at: https://www.cdc.gov/nchs/data/nhis/earlyrelease/EarlyRelease201803_08.pdf Accessed: August 28, 2018
3. Why people smoke;Jarvis;BMJ,2004
4. Centers for Disease Control and Prevention. Smoking-attributable mortality, years of potential life lost, and productivity losses—United States, 2000-2004 ed. 2008. Available at: https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5745a3.htm. Accessed November 4, 2018.
5. World Health Organization. WHO Global Report: Mortality Attributable to Tobacco. ed. 2012. Available at: http://www.who.int/iris/handle/10665/44815. Accessed November 4, 2018.