PubMed:32141569 / 1411-1414
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T234","span":{"begin":0,"end":3},"obj":"CC"}],"text":"but"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok267","span":{"begin":0,"end":3},"obj":"CC"}],"text":"but"}