PubMed:32167166 / 581-590
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T100","span":{"begin":0,"end":9},"obj":"VBD"}],"text":"performed"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok113","span":{"begin":0,"end":9},"obj":"VBD"},{"id":"event19","span":{"begin":0,"end":9},"obj":"OCCURRENCE"}],"text":"performed"}