PubMed:32235486 / 1036-1037
Annnotations
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok220","span":{"begin":0,"end":1},"obj":"("}],"text":"("}
MeasurableQuantitativeAnnotation
{"project":"MeasurableQuantitativeAnnotation","denotations":[{"id":"U4","span":{"begin":0,"end":1},"obj":"unit"}],"text":"("}