PMC:7781500 / 811-991 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T11","span":{"begin":30,"end":150},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"in a preformed questionnaire. Statistical analysis was performed to find out the statistical association between these factors and the RT-PCR results. Adjusted and unadjusted odds "}