PMC:7080117 / 17706-17963 JSONTXT

{"project":"LitCovid-PD-CLO","denotations":[{"id":"T149","span":{"begin":169,"end":172},"obj":"http://purl.obolibrary.org/obo/CLO_0051582"}],"text":"Ethics approval/consent to participate\nThe study was conducted in accordance with the principles of the Declaration of Helsinki, and Institutional Review Board approval has been obtained. The written informed consent for this retrospective study was waived."}

{"project":"LitCovid-sentences","denotations":[{"id":"T213","span":{"begin":0,"end":38},"obj":"Sentence"},{"id":"T214","span":{"begin":39,"end":187},"obj":"Sentence"},{"id":"T215","span":{"begin":188,"end":257},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Ethics approval/consent to participate\nThe study was conducted in accordance with the principles of the Declaration of Helsinki, and Institutional Review Board approval has been obtained. The written informed consent for this retrospective study was waived."}