PubMed:32061200 / 1017-1021
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T178","span":{"begin":0,"end":4},"obj":"NNS"}],"text":"days"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok194","span":{"begin":0,"end":4},"obj":"NNS"},{"id":"lookup30","span":{"begin":0,"end":4},"obj":"date_unit"}],"text":"days"}