PubMed:32141569 / 1629-1631
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T272","span":{"begin":0,"end":2},"obj":"IN"}],"text":"at"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok308","span":{"begin":0,"end":2},"obj":"IN"},{"id":"lookup37","span":{"begin":0,"end":2},"obj":"country_code"}],"text":"at"}