JIMÉNEZ DE LA JARA , J. .; CERDA LORCA, J. Vacunas y COVID-19 en el siglo XXI: Vaccines and COVID-19 in the XXI century. ARS MEDICA Revista de Ciencias Médicas, [S. l.], v. 45, n. 4, p. 3–4, 2020. DOI: 10.11565/arsmed.v45i4.1764. Disponível em: https://arsmedica.cl/index.php/MED/article/view/1764. Acesso em: 22 ene. 2021.