title: Ethical approval for all studies involving human participants.
authors.affiliation: CMAJ.
authors.forename: John
authors.initials: J
authors.lastname: Fletcher
mesh_terms: D002170:Canada; D032984:Ethics, Research; D006801:Humans; D033281:Nontherapeutic Human Experimentation / Q000941:ethics*; D011643:Publishing / Q000941:ethics*; D036302:Therapeutic Human Experimentation / Q000941:ethics*