PubMed:32061200 / 1534-1540
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T271","span":{"begin":0,"end":6},"obj":"NN"}],"text":"ground"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok295","span":{"begin":0,"end":6},"obj":"NN"}],"text":"ground"}