PMC:7417187 / 5547-5596
Annnotations
LitCovid-PD-CLO
{"project":"LitCovid-PD-CLO","denotations":[{"id":"T44","span":{"begin":22,"end":26},"obj":"http://purl.obolibrary.org/obo/UBERON_0000473"}],"text":"r an initial negative test can surely rule out in"}