PubMed:32134681 / 1943-1945
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T361","span":{"begin":0,"end":2},"obj":"CD"}],"text":"25"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok431","span":{"begin":0,"end":2},"obj":"CD"}],"text":"25"}