PubMed:31986264 / 1058-1060
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T158","span":{"begin":0,"end":2},"obj":"IN"}],"text":"By"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok173","span":{"begin":0,"end":2},"obj":"IN"},{"id":"lookup24","span":{"begin":0,"end":2},"obj":"stop"}],"text":"By"}