Masks
Devices that cover the nose and mouth to maintain aseptic conditions often for the prevention of the spread of infections (e.g. COVID19) or to administer inhaled anesthetics or other gases.
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Subheadings:
Tree Number(s): E07.325.877.500, E07.700.500, E07.700.560.782, E07.858.594.750, J01.637.708.560.782
MeSH Unique ID: D008397
Entry Terms: