Olmo, N. R. S., Saldiva, P. H. do N., Braga, A. L. F., Lin, C. A., Santos, U. de P., & Pereira, L. A. A. (2011). A review of low-level air pollution and adverse effects on human health: implications for epidemiological studies and public policy . Clinics, 66(4), 681-690. https://doi.org/10.1590/S1807-59322011000400025