1. Calvert GM, Karnik J, Mehler L, Beckman J, Morrissey B, Sievert J et al (2009) Acute pesticide poisoning among agricultural workers in the United States, 1998–2005. Am J Ind Med 51(12):883–898. https://doi.org/10.1002/ajim.20623
2. Central Intelligence Agency (2015) World factbook: Guatemala literacy. https://www.cia.gov/library/publications/the-world-factbook/geos/gt.html
3. Central Intelligence Agency (2018a) World factbook: Guatemala population. https://www.cia.gov/library/publications/the-world-factbook/geos/gt.html
4. Central Intelligence Agency (2018b) World factbook: Guatemala infant mortality rate & life expectancy at birth. https://www.cia.gov/library/publications/the-world-factbook/geos/gt.html
5. Central Intelligence Agency (2019) World factbook: Guatemala City population. https://www.cia.gov/library/publications/the-world-factbook/geos/gt.html