PMC:7258756 / 490-567 JSONTXT

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    LitCovid-PD-CLO

    {"project":"LitCovid-PD-CLO","denotations":[{"id":"T5","span":{"begin":32,"end":33},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"}],"text":"t swab/nasal swab specimens for a total of 881 suspected cases were screened "}