PubMed:32141569 / 313-315
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T60","span":{"begin":0,"end":2},"obj":"CD"}],"text":"12"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok69","span":{"begin":0,"end":2},"obj":"CD"}],"text":"12"}