PubMed:32141570 / 1572-1575
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T254","span":{"begin":0,"end":3},"obj":"VBD"}],"text":"was"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok280","span":{"begin":0,"end":3},"obj":"VBD"}],"text":"was"}