PubMed:31994742 / 511-513
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T89","span":{"begin":0,"end":2},"obj":"IN"}],"text":"Up"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok100","span":{"begin":0,"end":2},"obj":"IN"}],"text":"Up"}