1. World Health Organization. Burden of disease from Household Air Pollution for 2012. Geneva: World Health Organization; 2014. http://www.who.int/phe/health_topics/outdoorair/databases/FINAL_HAP_AAP_BoD_24March2014.pdf?ua=1 . Accessed 5 May 2015.
2. Cohen AJ, Anderson HR, Ostro B, Pandey KD, Krzyzanowski M, Kuenzli N, Gutschmidt K, Pope CA, Romieu I, Samet JM, et al. Mortality impacts of urban air pollution. In: Ezzati M, Lopez AD, Rodgers A, Murray CUJL, editors. Comparative quantification of health risks: Global and regional burden of disease due to selected major risk factors, vol. 2. Geneva: World Health Organization; 2004. p. 1353–433.
3. Anderson JO, Thundiyil JG, Stolbach A. Clearing the air: a review of the effects of particulate matter air pollution on human health. J Med Toxicol. 2012;8(2):166–75.
4. Kaplan GG, Hubbard J, Korzenik J, Sands BE, Panaccione R, Ghosh S, Wheeler AJ, Villeneuve PJ. The inflammatory bowel diseases and ambient air pollution: a novel association. Am J Gastroenterol. 2010;105(11):2412–9.
5. Kaplan GG, Szyszkowicz M, Fichna J, Rowe BH, Porada E, Vincent R, Madsen K, Ghosh S, Storr M. Non-specific abdominal pain and air pollution: a novel association. PLoS One. 2012;7(10), e47669.