PubMed:32096396 / 712-718
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T113","span":{"begin":0,"end":6},"obj":"NN"}],"text":"system"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok119","span":{"begin":0,"end":6},"obj":"NN"}],"text":"system"}