PubMed:32243238 / 1246-1248 JSONTXT

{"project":"LitCovid-TimeML","denotations":[{"id":"tok236","span":{"begin":0,"end":2},"obj":"CD"}],"text":"33"}

{"project":"MeasurableQuantitativeAnnotation","denotations":[{"id":"N6","span":{"begin":0,"end":2},"obj":"num"}],"text":"33"}