PubMed:32027812 / 434-436
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T75","span":{"begin":0,"end":2},"obj":"CD"}],"text":"19"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok82","span":{"begin":0,"end":2},"obj":"CD"}],"text":"19"}