PubMed:32083638 / 769-771
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T114","span":{"begin":0,"end":2},"obj":"CD"}],"text":"2 "}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok137","span":{"begin":0,"end":1},"obj":"CD"}],"text":"2 "}