PMC:7543471 / 21573-21608 JSONTXT

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    LitCovid-PD-CLO

    {"project":"LitCovid-PD-CLO","denotations":[{"id":"T154","span":{"begin":11,"end":14},"obj":"http://purl.obolibrary.org/obo/CLO_0051582"}],"text":"This study has several limitations."}

    LitCovid-sentences

    {"project":"LitCovid-sentences","denotations":[{"id":"T199","span":{"begin":0,"end":35},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"This study has several limitations."}