PubMed:32133830 / 1817-1819
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T332","span":{"begin":0,"end":2},"obj":"IN"}],"text":"By"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok370","span":{"begin":0,"end":2},"obj":"IN"},{"id":"lookup45","span":{"begin":0,"end":2},"obj":"stop"}],"text":"By"}