Rodriguez-Villamizar La, Moreno-Corzo Fe, Valbuena-Garcia Am, Uribe-Pérez Cj, Brome Mr, García Hi, Bravo Le, Ortiz-Martinez Rg, Niederbacher J, Osornio-Vargas Ar. Childhood leukemia in small geographical areas and proximity to industrial sources of air pollutants in three Colombian cities. Int J Environ. Res. Public Health. 2020;17:7925. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7662935/. Doi: 10.3390/ijerph17217925.