1. “Key Findings | State of the Air.” American Lung Association, https://www.lung.org/our-initiatives/healthy-air/sota/key-findings/. Accessed 30 Nov. 2019.
2. Air Pollution. https://www.who.int/news-room/air-pollution. Accessed 30 Nov. 2019.
3. Air pollution and early deaths in the United States. Part I: quantifying the impact of major sectors in 2005;Waitz;Atmos Environ,2013
4. “Air Pollution.” National Institute of Environmental Health Sciences, https://www.niehs.nih.gov/health/topics/agents/Air-Pollution/index.cfm. Accessed 30 Nov. 2019.
5. The imperative for climate action to protect health;Haines;NEJM,2019