PubMed:32087820 / 579-583
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T90","span":{"begin":0,"end":4},"obj":"VBD"}],"text":"used"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok100","span":{"begin":0,"end":4},"obj":"VBD"},{"id":"event23","span":{"begin":0,"end":4},"obj":"OCCURRENCE"}],"text":"used"}