PubMed:32088679 / 915-921
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T158","span":{"begin":0,"end":6},"obj":"NNS"}],"text":"cities"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok171","span":{"begin":0,"end":6},"obj":"NNS"}],"text":"cities"}