PubMed:32217556 / 1157-1159
Annnotations
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok233","span":{"begin":0,"end":2},"obj":"CD"}],"text":"50"}
MeasurableQuantitativeAnnotation
{"project":"MeasurableQuantitativeAnnotation","denotations":[{"id":"N7","span":{"begin":0,"end":2},"obj":"num"}],"text":"50"}