PubMed:32096396 / 43-49
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T6","span":{"begin":0,"end":6},"obj":"NN"}],"text":"system"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok7","span":{"begin":0,"end":6},"obj":"NN"}],"text":"system"}