PMC:7796176 / 30061-30262 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T207","span":{"begin":0,"end":175},"obj":"Sentence"},{"id":"T208","span":{"begin":176,"end":201},"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 Scientific Ethics Committee at Universidad de La Frontera, Chile (ORD.: 009-2020; 27 March 2020)."}