PubMed:32167166 / 913-916
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T152","span":{"begin":0,"end":3},"obj":"VBD"}],"text":"did"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok171","span":{"begin":0,"end":3},"obj":"VBD"}],"text":"did"}