PubMed:32105637 / 1316-1317
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T255","span":{"begin":0,"end":1},"obj":"CD"}],"text":"2"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok285","span":{"begin":0,"end":1},"obj":"CD"}],"text":"2"}