PMC:7068163 / 371-430
Annnotations
LitCovid-PD-CLO
{"project":"LitCovid-PD-CLO","denotations":[{"id":"T1","span":{"begin":9,"end":10},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"}],"text":"s during a large contact tracing investigation, comparing p"}