PubMed:32134681 / 1365-1367
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T230","span":{"begin":0,"end":2},"obj":"CD"}],"text":"52"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok264","span":{"begin":0,"end":2},"obj":"CD"}],"text":"52"}
LitCovid-PD-CLO
{"project":"LitCovid-PD-CLO","denotations":[{"id":"T15","span":{"begin":0,"end":2},"obj":"http://purl.obolibrary.org/obo/CLO_0001407"}],"text":"52"}