PMC:7200337 / 83834-83947 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T477","span":{"begin":0,"end":113},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"There was no significant difference in negative PCR results on day 4 or need for mechanical ventilation on day 6."}