PMC:7210464 / 70424-70478 JSONTXT

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    LitCovid-sentences

    {"project":"LitCovid-sentences","denotations":[{"id":"T643","span":{"begin":0,"end":54},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"After estimating (3) by 2SLS, we obtain the residuals."}