PMC:7786642 / 194-319 JSONTXT

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    LitCovid-sentences

    {"project":"LitCovid-sentences","denotations":[{"id":"T5","span":{"begin":7,"end":92},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":" bias.\n• We accounted for confounding, spatial autocorrelation and pre-existing conditions.\n• We found some evidence of an "}