PubMed:32031570 / 2542-2546
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T490","span":{"begin":0,"end":4},"obj":"NNS"}],"text":"days"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok577","span":{"begin":0,"end":4},"obj":"NNS"},{"id":"lookup68","span":{"begin":0,"end":4},"obj":"date_unit"}],"text":"days"}