PubMed:32031570 / 2902-2903
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T590","span":{"begin":0,"end":1},"obj":"CD"}],"text":"4"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok695","span":{"begin":0,"end":1},"obj":"CD"}],"text":"4"}
MeasurableQuantitativeAnnotation
{"project":"MeasurableQuantitativeAnnotation","denotations":[{"id":"N1","span":{"begin":0,"end":1},"obj":"num"}],"text":"4"}