Effectiveness of Surgical and Cotton Masks in Blocking SARS-CoV-2: A Controlled Comparison in 4 Patients.
Bae S, Kim MC, Kim JY, Cha HH, Lim JS, Jung J, Kim MJ, Oh DK, Lee MK, Choi SH, Sung M, Hong SB, Chung JW, Kim SH.
Bae S, et al.
Ann Intern Med. 2020 Jul 7;173(1):W22-W23. doi: 10.7326/M20-1342. Epub 2020 Apr 6.
Ann Intern Med. 2020.
PMID: 32251511
Free PMC article.
Retracted.
No abstract available.