PubMed:32150360 / 841-850
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T144","span":{"begin":0,"end":9},"obj":"NN"}],"text":"beginning"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok154","span":{"begin":0,"end":9},"obj":"NN"}],"text":"beginning"}