title: [Emergency endoscopy in upper digestive tract hemorrhage: a persistent controversy].
mesh_terms: D004630:Emergencies; D004724:Endoscopy; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis* / Q000628:therapy; D006801:Humans; D011446:Prospective Studies
vernacular_title: A endoscopia de urgência na hemorragia digestiva alta: controvérsia que persiste.