PubMed:32109279 / 1288-1294
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T226","span":{"begin":0,"end":6},"obj":"NN"}],"text":"length"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok260","span":{"begin":0,"end":6},"obj":"NN"}],"text":"length"}