3 ms·
The link you give above says "This article has been retracted. See Notice of Retraction." Here is the URL of the paper's retraction: https://www.acpjournals.or
by giardini 6y ago
The link you give above says "This article has been retracted. See Notice of Retraction." Here is the URL of the paper's retraction:
https://www.acpjournals.org/doi/10.7326/L20-0745 https://www.acpjournals.org/doi/10.7326/L20-0745
titled
"Notice of Retraction: Effectiveness of Surgical and Cotton Masks in Blocking SARS-CoV-2"