PMC:7281378 / 10647-10775 JSONTXT

{"project":"LitCovid-PD-CLO","denotations":[{"id":"T81144","span":{"begin":91,"end":97},"obj":"http://purl.obolibrary.org/obo/NCBITaxon_33208"}],"text":"for this systematic review.\n\n2.3. Ethical Approvals\nThis systematic review did not involve animal sampling or experimental proto"}

{"project":"LitCovid-sentences","denotations":[{"id":"T76","span":{"begin":29,"end":33},"obj":"Sentence"},{"id":"T77","span":{"begin":34,"end":51},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"for this systematic review.\n\n2.3. Ethical Approvals\nThis systematic review did not involve animal sampling or experimental proto"}