PMC:7796041 / 27528-27633 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T222","span":{"begin":0,"end":105},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Estimating optimal cut-off values is associated with uncertainty and is affected by the study population."}