PubMed:32061066 / 68-73
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T11","span":{"begin":0,"end":5},"obj":"NN"}],"text":"stage"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok12","span":{"begin":0,"end":5},"obj":"NN"}],"text":"stage"}