PubMed:31986264 / 148-152
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T26","span":{"begin":1,"end":4},"obj":"VBD"}],"text":" was"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok28","span":{"begin":1,"end":4},"obj":"VBD"}],"text":" was"}