PubMed:32145714 / 1386-1390
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T248","span":{"begin":0,"end":4},"obj":"VBN"}],"text":"used"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok289","span":{"begin":0,"end":4},"obj":"VBN"},{"id":"event6","span":{"begin":0,"end":4},"obj":"OCCURRENCE"}],"text":"used"}