PubMed:32064855 / 1197-1200
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T225","span":{"begin":0,"end":3},"obj":"CC"}],"text":"but"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok235","span":{"begin":0,"end":3},"obj":"CC"}],"text":"but"}