PMC:7160611 / 9337-9422
Annnotations
LitCovid-PD-CLO
{"project":"LitCovid-PD-CLO","denotations":[{"id":"T36","span":{"begin":32,"end":36},"obj":"http://purl.obolibrary.org/obo/UBERON_0000473"}],"text":"rotective mask (taking the leak test); wearing medical protective clothing (after rem"}