PubMed:32154135 / 394-398
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T65","span":{"begin":0,"end":4},"obj":"VBN"}],"text":"been"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok75","span":{"begin":0,"end":4},"obj":"VBN"}],"text":"been"}