PubMed:32124000 / 1486-1493
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T221","span":{"begin":0,"end":7},"obj":"NN"}],"text":"control"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok240","span":{"begin":0,"end":7},"obj":"NN"}],"text":"control"}