PubMed:32056249 / 421-423
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T68","span":{"begin":0,"end":2},"obj":"CD"}],"text":"24"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok75","span":{"begin":0,"end":2},"obj":"CD"}],"text":"24"}