PubMed:32118389 / 2164-2171
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T451","span":{"begin":0,"end":7},"obj":"NNS"}],"text":"changes"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok496","span":{"begin":0,"end":7},"obj":"NNS"}],"text":"changes"}