PubMed:32243238 / 1838-1840
Annnotations
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok405","span":{"begin":0,"end":2},"obj":"CD"}],"text":"52"}
MeasurableQuantitativeAnnotation
{"project":"MeasurableQuantitativeAnnotation","denotations":[{"id":"N5","span":{"begin":0,"end":2},"obj":"num"}],"text":"52"}