Will masks protect you against covid19?
Effectiveness of Surgical and Cotton Masks in Blocking SARS–CoV-2
https://www.acpjournals.org/doi/10.7326/M20-1342
Cloth masks dangerous to your health?
This article was published with permission by the author and was first posted here: https://checkthedata.blogspot.com/2020/05/will-masks-protect-you-against-covid19.html
