PubMed:32171193 / 2000-2002
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T311","span":{"begin":0,"end":2},"obj":"IN"}],"text":"by"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok361","span":{"begin":0,"end":2},"obj":"IN"},{"id":"lookup54","span":{"begin":0,"end":2},"obj":"country_code"}],"text":"by"}