GUERRA-CENTENO, D.; BURMESTER-RUIZ, L.; GUERRA-BURMESTER, P.; GUERRA-BURMESTER, D.; VILLATORO-PAZ, F. Voluntary and mandatory use of face mask by pedestrians in Guatemala City during the COVID-19 pandemic. Ciencia, Tecnologí­a y Salud, [S. l.], v. 7, n. 3, p. 477–482, 2020. DOI: 10.36829/63CTS.v7i3.894. Disponível em: https://revistas.usac.edu.gt/index.php/cytes/article/view/894. Acesso em: 24 nov. 2024.