PubMed:32176772 / 571-574
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T99","span":{"begin":0,"end":3},"obj":"NN"}],"text":"age"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok108","span":{"begin":0,"end":3},"obj":"NN"}],"text":"age"}