PubMed:32118639 / 1811-1813
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T293","span":{"begin":0,"end":2},"obj":"IN"}],"text":"By"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok331","span":{"begin":0,"end":2},"obj":"IN"},{"id":"lookup30","span":{"begin":0,"end":2},"obj":"stop"}],"text":"By"}