PMC:7464116 / 45242-45321 JSONTXT

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    LitCovid-sentences

    {"project":"LitCovid-sentences","denotations":[{"id":"T269","span":{"begin":0,"end":79},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"These hazard ratios (HR)were higher than risk factors such as advanced age (HR:"}