PubMed:32104911 / 955-957
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T146","span":{"begin":0,"end":2},"obj":"CD"}],"text":"24"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok155","span":{"begin":0,"end":2},"obj":"CD"}],"text":"24"}