PubMed:31994742 / 1372-1379
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T260","span":{"begin":0,"end":7},"obj":"JJ"}],"text":"elderly"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok313","span":{"begin":0,"end":7},"obj":"JJ"}],"text":"elderly"}