PMC:7396557 / 1551-1648 JSONTXT

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    LitCovid-sentences

    {"project":"LitCovid-sentences","denotations":[{"id":"T13","span":{"begin":89,"end":96},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"gital databases (including PubMed, CNKI, Google Scholar, Web of Science, and Elsevier).\n\nResults\n"}