PubMed:31995857 / 1338-1344
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T243","span":{"begin":0,"end":6},"obj":"NN"}],"text":"number"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok273","span":{"begin":0,"end":6},"obj":"NN"}],"text":"number"}