PMC:7675688 / 456-591 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T9","span":{"begin":64,"end":71},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":" weeks, regardless of test results or the absence of symptoms.\n\nResults\nThe crew was predominantly young (mean age, 27 years) and was i"}