PMC:7795972 / 23328-23510 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T183","span":{"begin":0,"end":182},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"The study was conducted according to the guidelines of the Declaration of Helsinki, and approved by the Norwegian Regional Committee for Ethics in Medical Research (REK 2020/131560)."}