PMC:7675688 / 410-566 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T9","span":{"begin":110,"end":117},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"w members were followed up for a minimum of 10 weeks, regardless of test results or the absence of symptoms.\n\nResults\nThe crew was predominantly young (mean"}