PubMed:32234107 / 629-630 JSONTXT

{"project":"LitCovid-TimeML","denotations":[{"id":"tok117","span":{"begin":0,"end":1},"obj":"CD"}],"text":"3"}

{"project":"MeasurableQuantitativeAnnotation","denotations":[{"id":"N2","span":{"begin":0,"end":1},"obj":"num"}],"text":"3"}