PubMed:32118389 / 1104-1106
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T201","span":{"begin":0,"end":2},"obj":"CD"}],"text":"90"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok215","span":{"begin":0,"end":2},"obj":"CD"}],"text":"90"}