
PubMed:32118639 / 1533-1538
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T252","span":{"begin":0,"end":5},"obj":"NNS"}],"text":"years"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok279","span":{"begin":0,"end":5},"obj":"NNS"},{"id":"lookup24","span":{"begin":0,"end":5},"obj":"date_unit"}],"text":"years"}
MeasurableQuantitativeAnnotation
{"project":"MeasurableQuantitativeAnnotation","denotations":[{"id":"U3","span":{"begin":0,"end":5},"obj":"unit"}],"text":"years"}