PMC:7386785 / 110980-111025 JSONTXT

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    LitCovid-PD-CLO

    {"project":"LitCovid-PD-CLO","denotations":[{"id":"T80","span":{"begin":4,"end":5},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"}],"text":"Was a case‐control design avoided? Yes    "}

    LitCovid-sentences

    {"project":"LitCovid-sentences","denotations":[{"id":"T1307","span":{"begin":0,"end":34},"obj":"Sentence"},{"id":"T1308","span":{"begin":36,"end":45},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Was a case‐control design avoided? Yes    "}