PubMed:32141570 / 1398-1407
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T222","span":{"begin":0,"end":9},"obj":"NNS"}],"text":"countries"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok244","span":{"begin":0,"end":9},"obj":"NNS"}],"text":"countries"}