PMC:7784824 / 466-580 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T10","span":{"begin":2,"end":49},"obj":"Sentence"},{"id":"T11","span":{"begin":50,"end":61},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":". Two case reports are presented as illustration.\nObjectives: The aim of this study was to evaluate the performanc"}