J. C. . Giraldo Forero, M. C. . Bernal Lizarazú, A. M. Guatibonza Carreño, A. C. . González Gómez, and J. . Fernández Manrique, “Pneumocystis jirovecii y SARS-CoV-2; COVID-19”, nova, vol. 18, no. 35, pp. 81–86, Sep. 2020, doi: 10.22490/24629448.4190.