PubMed:32064853 / 1594-1598
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T305","span":{"begin":0,"end":4},"obj":"NNS"}],"text":"days"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok346","span":{"begin":0,"end":4},"obj":"NNS"},{"id":"lookup42","span":{"begin":0,"end":4},"obj":"date_unit"}],"text":"days"}