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Literature DB >> 33269698

Letter of concern regarding »Reduction in COVID-19 infection using surgical facial masks outside the healthcare system«.

Abstract

Entities: Disease

Year: 2020 PMID： 33269698

Source DB: PubMed Journal: Dan Med J ISSN： 2245-1919 Impact factor: 1.240

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Authors: Atle Fretheim
Journal: Trials Date: 2021-03-29 Impact factor: 2.279

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