PubMed:32064853 / 1279-1287
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T246","span":{"begin":0,"end":8},"obj":"NNS"}],"text":"counties"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok278","span":{"begin":0,"end":8},"obj":"NNS"}],"text":"counties"}