PMC:7281378 / 10568-10833 JSONTXT

{"project":"LitCovid-PD-CLO","denotations":[{"id":"T81144","span":{"begin":170,"end":176},"obj":"http://purl.obolibrary.org/obo/NCBITaxon_33208"}],"text":"s.\nThe eligible articles (n = 281) thus selected were included in the analysis for this systematic review.\n\n2.3. Ethical Approvals\nThis systematic review did not involve animal sampling or experimental protocols in the laboratory. The data used for writing this art"}

{"project":"LitCovid-sentences","denotations":[{"id":"T75","span":{"begin":3,"end":106},"obj":"Sentence"},{"id":"T76","span":{"begin":108,"end":112},"obj":"Sentence"},{"id":"T77","span":{"begin":113,"end":130},"obj":"Sentence"},{"id":"T78","span":{"begin":131,"end":230},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"s.\nThe eligible articles (n = 281) thus selected were included in the analysis for this systematic review.\n\n2.3. Ethical Approvals\nThis systematic review did not involve animal sampling or experimental protocols in the laboratory. The data used for writing this art"}