PubMed:32167166 / 822-828
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T137","span":{"begin":0,"end":6},"obj":"NN"}],"text":"factor"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok156","span":{"begin":0,"end":6},"obj":"NN"}],"text":"factor"}