PMC:7210464 / 22909-23005 JSONTXT

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    LitCovid-PD-CLO

    {"project":"LitCovid-PD-CLO","denotations":[{"id":"T95","span":{"begin":44,"end":56},"obj":"http://purl.obolibrary.org/obo/OBI_0000968"}],"text":"We rely on meteorological data to construct instrumental variables for the endogenous variables."}

    LitCovid-sentences

    {"project":"LitCovid-sentences","denotations":[{"id":"T174","span":{"begin":0,"end":96},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"We rely on meteorological data to construct instrumental variables for the endogenous variables."}