N. R. S. Olmo, P. H. do N. Saldiva, A. L. F. Braga, C. A. Lin, U. de P. Santos, and L. A. A. Pereira, “ A review of low-level air pollution and adverse effects on human health: implications for epidemiological studies and public policy ”, Clinics, vol. 66, no. 4, pp. 681–690, Jan. 2011, doi: 10.1590/S1807-59322011000400025.