PubMed:32141569 / 248-254
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T49","span":{"begin":0,"end":6},"obj":"NN"}],"text":"spread"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok53","span":{"begin":0,"end":6},"obj":"NN"}],"text":"spread"}