PMC:7444865 / 19332-19516 JSONTXT

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    LitCovid-PD-CLO

    {"project":"LitCovid-PD-CLO","denotations":[{"id":"T96","span":{"begin":5,"end":7},"obj":"http://purl.obolibrary.org/obo/CLO_0050510"}],"text":"ust [18]. Nevertheless, there are caveats. First, SHUR does not employ probability sampling. Therefore, estimates from the survey might be sensitive to systematic errors because respon"}

    LitCovid-sentences

    {"project":"LitCovid-sentences","denotations":[{"id":"T182","span":{"begin":10,"end":42},"obj":"Sentence"},{"id":"T183","span":{"begin":43,"end":92},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"ust [18]. Nevertheless, there are caveats. First, SHUR does not employ probability sampling. Therefore, estimates from the survey might be sensitive to systematic errors because respon"}