PubMed:32217556 / 1362-1363
Annnotations
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok294","span":{"begin":0,"end":1},"obj":"CD"}],"text":"4"}
MeasurableQuantitativeAnnotation
{"project":"MeasurableQuantitativeAnnotation","denotations":[{"id":"N4","span":{"begin":0,"end":1},"obj":"num"}],"text":"4"}