PubMed:32171865 / 1362-1364
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T255","span":{"begin":0,"end":2},"obj":"CD"}],"text":"43"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok277","span":{"begin":0,"end":2},"obj":"CD"}],"text":"43"}