PubMed:31967321 / 229-231
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T35","span":{"begin":0,"end":2},"obj":"IN"}],"text":"by"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok37","span":{"begin":0,"end":2},"obj":"IN"},{"id":"lookup6","span":{"begin":0,"end":2},"obj":"country_code"}],"text":"by"}