4.7 Letter

Effectiveness of Surgical and Cotton Masks in Blocking SARS-CoV-2: A Controlled Comparison in 4 Patients

Journal

ANNALS OF INTERNAL MEDICINE
Volume 173, Issue 1, Pages W22-W23

Publisher

AMER COLL PHYSICIANS
DOI: 10.7326/M20-1342

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Funding

  1. Government-wide R&D Fund Project for Infectious Disease Research (GFID), Republic of Korea [HG18C0037]

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