PubMed:32074786 / 1627-1632
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T251","span":{"begin":0,"end":5},"obj":"NN"}],"text":"stage"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok269","span":{"begin":0,"end":5},"obj":"NN"}],"text":"stage"}