PubMed:32243238 / 1385-1387
Annnotations
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok273","span":{"begin":0,"end":2},"obj":"CD"}],"text":"81"}
MeasurableQuantitativeAnnotation
{"project":"MeasurableQuantitativeAnnotation","denotations":[{"id":"N12","span":{"begin":0,"end":2},"obj":"num"}],"text":"81"}