PubMed:32211816 / 3053-3057
Annnotations
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok851","span":{"begin":1,"end":2},"obj":"NN"},{"id":"tok852","span":{"begin":2,"end":4},"obj":"CD"}],"text":" [15"}
MeasurableQuantitativeAnnotation
{"project":"MeasurableQuantitativeAnnotation","denotations":[{"id":"N6","span":{"begin":0,"end":4},"obj":"num"}],"text":" [15"}