PubMed:32134681 / 985-994
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T165","span":{"begin":0,"end":9},"obj":"VBD"}],"text":"underwent"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok189","span":{"begin":0,"end":9},"obj":"VBD"},{"id":"event14","span":{"begin":0,"end":9},"obj":"OCCURRENCE"}],"text":"underwent"}