PubMed:32172546 / 575-584
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T97","span":{"begin":0,"end":9},"obj":"VBN"}],"text":"performed"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok106","span":{"begin":0,"end":9},"obj":"VBN"},{"id":"event7","span":{"begin":0,"end":9},"obj":"OCCURRENCE"}],"text":"performed"}