PubMed:32062875 / 1352-1355
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T246","span":{"begin":0,"end":3},"obj":"VBD"}],"text":"had"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok270","span":{"begin":0,"end":3},"obj":"VBD"}],"text":"had"}