PubMed:32031570 / 1478-1480
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T240","span":{"begin":0,"end":2},"obj":"CD"}],"text":"17"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok261","span":{"begin":0,"end":2},"obj":"CD"}],"text":"17"}