DOI: 10.1055/s-00000036

Laryngo-Rhino-Otologie

References

Bae S, Kim MC, Kim JY. et al
Effectiveness of surgical and cotton masks in blocking SARS-CoV-2: a controlled comparison in 4 patients.

Ann Intern Med 2020; M20-1342 doi:10.7326/M20-1342

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