PubMed:32172546 / 617-624
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T102","span":{"begin":0,"end":7},"obj":"NNS"}],"text":"changes"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok111","span":{"begin":0,"end":7},"obj":"NNS"}],"text":"changes"}