PubMed:32022276 / 595-602
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T89","span":{"begin":0,"end":7},"obj":"VBN"}],"text":"studied"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok99","span":{"begin":0,"end":7},"obj":"VBN"},{"id":"event5","span":{"begin":0,"end":7},"obj":"OCCURRENCE"}],"text":"studied"}