PMC:7253233 / 15777-15810
Annnotations
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T117","span":{"begin":0,"end":33},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Ethical approval/Informed consent"}