PubMed:32224151 / 1324-1326
Annnotations
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok281","span":{"begin":0,"end":2},"obj":"CD"}],"text":"23"}
MeasurableQuantitativeAnnotation
{"project":"MeasurableQuantitativeAnnotation","denotations":[{"id":"N13","span":{"begin":0,"end":2},"obj":"num"}],"text":"23"}