PubMed:32134681 / 576-582
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T89","span":{"begin":0,"end":6},"obj":"NN"}],"text":"extent"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok99","span":{"begin":0,"end":6},"obj":"NN"}],"text":"extent"}