Lima, Adeânio, Maria Cristina de Camargo, Martha Sílvia Martinez-Silveira, Bruno Pires Bastos, Diana Lima dos Santos, Sara Emanuela de Carvalho Mota, Roberta Borges Silva, and Isabela Porto de Toledo. 2020. “Effectiveness of the Facial Mask (non-Woven) in the Population to Prevent Coronavirus Infections: A Systematic Review”. SciELO Preprints. https://doi.org/10.1590/SciELOPreprints.413.