title: The ethics of changing practice: do we cross the line?
authors.forename: Alan F
authors.initials: AF
authors.lastname: Merry
mesh_terms: D002986:Clinical Trials as Topic / Q000941:ethics* / Q000639:trends*; D004992:Ethics, Medical; D005112:Extracorporeal Circulation / Q000941:ethics* / Q000639:trends*; D038622:Internationality; D010506:Periodicals as Topic / Q000941:ethics* / Q000639:trends*