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Masks Types: 4 types of common masks and how (and if) they help | Mask Types for Coronavirus
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Low-cost measurement of face mask efficacy for filtering expelled droplets during speech | Science Advances
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What kind of mask is best? Ask an infectious disease doctor - Sanford Health News
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Bacterial and fungal isolation from face masks under the COVID-19 pandemic | Scientific Reports
Face masks and COVID-19: All you need to know | Coronavirus pandemic | Al Jazeera
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Comparing the fit of N95, KN95, surgical, and cloth face masks and assessing the accuracy of fit checking | PLOS ONE
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Michigan Medicine and Sparrow hospital systems ease mask policy
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What type of mask is best for coronavirus (COVID-19) protection ? | MD Anderson Cancer Center
