PubMed:31996342 / 57-60
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T10","span":{"begin":0,"end":3},"obj":"CD"}],"text":"000"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok11","span":{"begin":0,"end":3},"obj":"CD"}],"text":"000"}