PubMed:32023684 / 81-88
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T11","span":{"begin":0,"end":7},"obj":"NN"}],"text":"control"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok12","span":{"begin":0,"end":7},"obj":"NN"}],"text":"control"}