PubMed:31967321 / 692-696
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T110","span":{"begin":0,"end":4},"obj":"NN"}],"text":"bias"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok116","span":{"begin":0,"end":4},"obj":"NN"}],"text":"bias"}