PubMed:32159237 / 1723-1733
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T301","span":{"begin":0,"end":10},"obj":"NN"}],"text":"efficiency"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok325","span":{"begin":0,"end":10},"obj":"NN"}],"text":"efficiency"}