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doi:10.1371/journal.pone.0262830
Eugenia O’Kelly, Anmol Arora, Sophia Pirog, Charlotte Pearson, James Ward, P. John Clarkson
Face mask fit hacks: Improving the fit of KN95 masks and surgical masks with fit alteration techniques
10.1371/journal.pone.0262830
http://dx.doi.org/10.1371/journal.pone.0262830
2022-02-02
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