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Response to letter of concern regarding ¼Reduction in COVID-19 infection using surgical facial masks outside the healthcare system«.
Dan Med J ; 67(12)2020 11 11.
Article in English | MEDLINE | ID: covidwho-995436
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Collection: International databases Database: MEDLINE Main subject: COVID-19 / Masks Type of study: Prognostic study Limits: Humans Language: English Year: 2020 Document Type: Article

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Collection: International databases Database: MEDLINE Main subject: COVID-19 / Masks Type of study: Prognostic study Limits: Humans Language: English Year: 2020 Document Type: Article