PubMed:32133830 / 1590-1591
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T291","span":{"begin":0,"end":1},"obj":"CD"}],"text":"6"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok326","span":{"begin":0,"end":1},"obj":"CD"}],"text":"6"}