PubMed:32053389 / 742-755
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T16","span":{"begin":0,"end":13},"obj":"JJ"}],"text":"unprecedented"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok135","span":{"begin":0,"end":13},"obj":"JJ"}],"text":"unprecedented"}