Protocol of a prospective comprehensive evaluation of an elastic band beard cover for filtering facepiece respirators in healthcare | PLOS ONE
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Under-mask beard covers achieve an adequate seal with tight-fitting disposable respirators using quantitative fit testing - ScienceDirect
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OSHA Releases a Letter of Interpretation to Clarify OSHAs Standards for Respiratory Protection Against Covid-19 for Employees with Religiously Mandated Facial Hair - Red On line (COM)
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