PubMed:32026671 / 33-37
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T6","span":{"begin":1,"end":3},"obj":"CD"}],"text":" 29 "}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok7","span":{"begin":1,"end":3},"obj":"CD"}],"text":" 29 "}