PubMed:31994742 / 1143-1146
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T215","span":{"begin":0,"end":3},"obj":"JJ"}],"text":"old"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok252","span":{"begin":0,"end":3},"obj":"JJ"}],"text":"old"}