PubMed:32052373 / 902-908
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T128","span":{"begin":0,"end":6},"obj":"NN"}],"text":"spread"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok146","span":{"begin":0,"end":6},"obj":"NN"}],"text":"spread"}