PubMed:32134681 / 2511-2514
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T506","span":{"begin":0,"end":3},"obj":"VBD"}],"text":"had"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok604","span":{"begin":0,"end":3},"obj":"VBD"}],"text":"had"}