PubMed:32062875 / 1631-1632
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T294","span":{"begin":0,"end":1},"obj":"CD"}],"text":"3"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok325","span":{"begin":0,"end":1},"obj":"CD"}],"text":"3"}