PubMed:32134681 / 2388-2395
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T475","span":{"begin":0,"end":7},"obj":"NNS"}],"text":"changes"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok567","span":{"begin":0,"end":7},"obj":"NNS"}],"text":"changes"}