PubMed:32133830 / 51-59
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T8","span":{"begin":1,"end":8},"obj":"NN"}],"text":" cluster"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok9","span":{"begin":1,"end":8},"obj":"NN"}],"text":" cluster"}