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Ingenuity during the COVID-19 pandemic: a controlled experiment for respirator mask efficacy testing

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  • Contributors All authors contributed in a significant manner to this manuscript. MH, DR, PN, DL, EF, JI and LG were all critical in designing and performing the study. DC and DR wrote the manuscript, and DC submitted the manuscript.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests None declared.

  • Provenance and peer review Not commissioned; externally peer reviewed.