Consent: informed, implied, and deferred.
D004630:Emergencies; D028741:Ethics Committees, Clinical; D028744:Ethics Committees, Research; D006805:Human Experimentation; D006801:Humans; D007258:Informed Consent; D033281:Nontherapeutic Human Experimentation; D035844:Researcher-Subject Relations; D018570:Risk Assessment; D036302:Therapeutic Human Experimentation