PubMed:32176772 / 653-657
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T119","span":{"begin":0,"end":4},"obj":"VBD"}],"text":"were"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok136","span":{"begin":0,"end":4},"obj":"VBD"}],"text":"were"}