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. 2021 Apr 19;4(4):e216857. doi: 10.1001/jamanetworkopen.2021.6857

Figure 1. Testing Procedures.

Figure 1.

AzBio indicates AzBio Sentence Test; HFE, half-face elastomeric respirator; MRT, Modified Rhyme Test; NASA-TLX, NASA Task Load Index; and PAPR, powered air-purifying respirator.