anexo3 Facemasks in the COVID 100%

Although several countries mandated wearing facemask in health care settings and public areas, scientific evidences are lacking supporting their efficacy for reducing morbidity or mortality associated with infectious or viral diseases [2], [14], [19].

https://www.caja-pdf.es/2021/09/11/anexo3facemasks-in-the-covid/

11/09/2021 www.caja-pdf.es