PubMed:32061198 / 893-905
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T154","span":{"begin":0,"end":12},"obj":"NN"}],"text":"exacerbation"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok188","span":{"begin":0,"end":12},"obj":"NN"}],"text":"exacerbation"}