PubMed:32181672 / 739-741
Annnotations
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok137","span":{"begin":0,"end":2},"obj":"CD"}],"text":"60"}
MeasurableQuantitativeAnnotation
{"project":"MeasurableQuantitativeAnnotation","denotations":[{"id":"N4","span":{"begin":0,"end":2},"obj":"num"}],"text":"60"}