PubMed:32031570 / 788-799
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T126","span":{"begin":0,"end":11},"obj":"JJ"}],"text":"demographic"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok137","span":{"begin":0,"end":11},"obj":"JJ"}],"text":"demographic"}