PubMed:32166318 / 434-441
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T65","span":{"begin":0,"end":7},"obj":"NN"}],"text":"control"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok69","span":{"begin":0,"end":7},"obj":"NN"}],"text":"control"}