PubMed:32118389 / 1254-1256
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T239","span":{"begin":0,"end":2},"obj":"CD"}],"text":"45"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok254","span":{"begin":0,"end":2},"obj":"CD"}],"text":"45"}
LitCovid-PD-CLO
{"project":"LitCovid-PD-CLO","denotations":[{"id":"T4","span":{"begin":0,"end":2},"obj":"http://purl.obolibrary.org/obo/CLO_0053799"}],"text":"45"}