PubMed:32077115 / 228-234
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T35","span":{"begin":0,"end":6},"obj":"VBN"}],"text":"spread"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok40","span":{"begin":0,"end":6},"obj":"NN"}],"text":"spread"}