Smoking--A Threat to Health: References

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Stockman J. Parental Smoking and the Risk of Middle ear Disease in Children: A Systematic Review and Meta-Analysis. Yearbook of Pediatrics. 2013;2013:130-132. doi:10.1016/j.yped.2012.03.029.

Health Effects of Smoking. American Lung Association. http://www.lung.org/stop-smoking/smoking-facts/health-effects-of-smoking.html. Accessed May 2016.