PubMed:32118390 / 1899-1902
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T179","span":{"begin":0,"end":3},"obj":"JJ"}],"text":"old"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok509","span":{"begin":0,"end":3},"obj":"JJ"}],"text":"old"}