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Mitze T, Kosfeld R, Rode J, Walde K, et al. Face masks considerably reduce COVID-19 cases in Germany. Proc Natl Acad Sci U S A 2020;117:32293-32301.
PMID: 33273115
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Mitze T, Kosfeld R, Rode J, Walde K, et al. Face masks considerably reduce COVID-19 cases in Germany. Proc Natl Acad Sci U S A 2020;117:32293-32301.
PMID: 33273115
|
|
|
|