PubMed:32102777 / 1553-1559
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T242","span":{"begin":0,"end":6},"obj":"NN"}],"text":"origin"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok275","span":{"begin":0,"end":6},"obj":"NN"}],"text":"origin"}