PubMed:32159237 / 1049-1063
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T186","span":{"begin":0,"end":14},"obj":"NN"}],"text":"high-frequency"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok199","span":{"begin":0,"end":14},"obj":"JJ"}],"text":"high-frequency"}