PubMed:32074786 / 1601-1606
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T246","span":{"begin":0,"end":5},"obj":"NN"}],"text":"stage"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok262","span":{"begin":0,"end":5},"obj":"NN"}],"text":"stage"}