PMC:7782580 / 62086-62217 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T466","span":{"begin":0,"end":131},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"This study was conducted following the declaration of Helsinki and was approved by the Capital Medical University Ethics Committee."}