PubMed:32026671 / 2055-2056
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T355","span":{"begin":0,"end":1},"obj":"CD"}],"text":"4"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok388","span":{"begin":0,"end":1},"obj":"LS"}],"text":"4"}