PubMed:32176772 / 909-911
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T194","span":{"begin":0,"end":2},"obj":"CD"}],"text":"67"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok220","span":{"begin":0,"end":2},"obj":"CD"}],"text":"67"}