PubMed:32181672 / 1575-1577
Annnotations
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok358","span":{"begin":0,"end":2},"obj":"CD"}],"text":"64"}
MeasurableQuantitativeAnnotation
{"project":"MeasurableQuantitativeAnnotation","denotations":[{"id":"N8","span":{"begin":0,"end":2},"obj":"num"}],"text":"64"}