PMC:7253233 / 66-113 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T2","span":{"begin":3,"end":27},"obj":"Sentence"},{"id":"T3","span":{"begin":29,"end":37},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"9: Is There an Association?\n\nAbstract\nBackgroun"}