Facial Masking for Covid-19. Brosseau LM, Roy CJ, Osterholm MT. N Engl J Med 2020;383.

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Amedeo Smart

Independent Medical Education

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Brosseau LM, Roy CJ, Osterholm MT. Facial Masking for Covid-19. N Engl J Med 2020;383.
PMID: 33095524