PubMed:32031570 / 2806-2808
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T554","span":{"begin":0,"end":2},"obj":"CD"}],"text":"23"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok650","span":{"begin":0,"end":2},"obj":"CD"}],"text":"23"}
MeasurableQuantitativeAnnotation
{"project":"MeasurableQuantitativeAnnotation","denotations":[{"id":"N3","span":{"begin":0,"end":2},"obj":"num"}],"text":"23"}