PMC:7781500 / 19560-19736 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T200","span":{"begin":21,"end":98},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"nd to be protective. But no concluding remarks could not be made owing to the smaller sample size.\nThe study's major strength is that all the samples were tested by RT-PCR, whi"}