1. U.S. Environmental Protection Agency (2010) Our nation’s air: status and trends through 2008. EPA-454/R-09-002. Office of Air Quality Planning and Standards, Triangle Park
2. Cohen AJ, Brauer M, Burnett R et al (2017) Estimates and 25-year trends of the global burden of disease attributable to ambient air pollution: an analysis of data from the global burden of diseases study 2015. Lancet 389(10082):1907–1918
3. World Health Organization (2014) 7 million premature deaths annually linked to air pollution. World Health Organization, Geneva. http://www.who.int/mediacentre/news/releases/2014/air-pollution/en/ . Accessed Nov 2017
4. World Health Organization (2016) Ambient air pollution: a global assessment of exposure and burden of disease. World Health Organization, Geneva
5. Pope CA, Burnett RT, Thun MJ et al (2002) Lung cancer, cardiopulmonary mortality, and long-term exposure to fine particulate air pollution. JAMA 287(9):1132–1141