PMC:7267243 / 19363-19379
Annnotations
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T212","span":{"begin":0,"end":16},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"ETHICAL APPROVAL"}