PMC:7796344 / 11108-11190 JSONTXT

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    LitCovid-sentences

    {"project":"LitCovid-sentences","denotations":[{"id":"T72","span":{"begin":0,"end":82},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Participants had to be at least 18 years of age; there were no exclusion criteria."}