Guillette, D., Stratton, J., Varia, M., Chau, V. and Loh, L. C. (2020) “Canadian Public Health Agency Lessons on Using Choropleth Maps to Characterize Geographic Distribution of COVID-19 Data”, Acta Médica Portuguesa. Lisbon, Portugal, 33(12), pp. 792–794. doi: 10.20344/amp.15056.