PMC:7289100 / 8579-8625 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T48","span":{"begin":0,"end":46},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Three of them required mechanical ventilation."}