DOI:
10.1055/s-00025477
International Archives of Otorhinolaryngology
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References
CDC - Centers for Disease Control and Prevention.
Improve How Your Mask Protects You [Internet].
Feb. 13, 2021. Accessed Mar 24, 2021 at:
https://www.cdc.gov/coronavirus/2019-ncov/your-health/effective-masks.html
We do not assume any responsibility for the contents of the web pages of other providers.