Cloth Masks May Prevent Transmission of COVID-19: An Evidence-Based, Risk-Based Approach.
Catherine M ClaseEdouard L FuMeera JosephRupert C L BealeMyrna B DolovichMeg J JardineJohannes F E MannRoberto Flavio Pecoits-FilhoWolfgang C WinkelmayerJuan J CarreroPublished in: Annals of internal medicine (2020)
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