1. U.S. Department of Health and Human Services. (2014). The Health consequences of smoking—50 years of progress: A report of the surgeon general, 2014, 1–978.
2. Mamudu, M. H., Littleton, A. M., & Wang, L. (2015). Regional population health improvement plan: Tobacco Cessation in Northeast Tennessee. Johnson City, Tennessee.
3. CDC. (2015). National center for health statistics: Healthy people 2020. Retrieved October 5, 2016, from
http://www.cdc.gov/nchs/healthy_people/hp2020.htm
.
4. World Health Organization. (2014). Electronic nicotine delivery systems: Report by WHO. Geneva: WHO Framework Convention on Tobacco Control.
5. Grana, R., Benowitz, N., & Glantz, S. A. (2014). E-cigarettes: A scientific review. Circulation, 129(19), 1972–1986. doi:
10.1161/CIRCULATIONAHA.114.007667
.