PubMed:32118389 / 1993-1994
Annnotations
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok452","span":{"begin":0,"end":1},"obj":"CD"}],"text":"1"}
MeasurableQuantitativeAnnotation
{"project":"MeasurableQuantitativeAnnotation","denotations":[{"id":"N14","span":{"begin":0,"end":1},"obj":"num"}],"text":"1"}