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They Evoke Darth Vader, but These Masks May Save Your Doctor's Life - The New York Times
Reusable respirator could ease COVID-19 medical mask shortages – LabNews
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Faculty design could help in coronavirus fight | YSU
Unmasked: Experts explain necessary respiratory protection for COVID-19 | CIDRAP
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Coronavirus: U.S. stocked N95 face masks instead of reusable respirators
What is the efficacy of standard face masks compared to respirator masks in preventing COVID-type respiratory illnesses in primary care staff? - The Centre for Evidence-Based Medicine
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Why N95 masks are still in short supply months into covid-19 pandemic - Washington Post
What are surgical masks and respirators, and why are they important in the fight against COVID-19? | PBS NewsHour
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AHN Partners with MSA Safety to Provide P100 Protective Masks to Clinical Staff on Frontlines of COVID-19 Pandemic
Effectiveness of Face Mask or Respirator Use in Indoor Public Settings for Prevention of SARS-CoV-2 Infection — California, February–December 2021 | MMWR
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Coronavirus: 3M tells Trump halting exports would reduce number of masks
