title: [The role of emergency endoscopy in the diagnosis of upper gastrointestinal bleeding].
mesh_terms: D004630:Emergencies; D004724:Endoscopy; D004935:Esophageal Diseases / Q000175:diagnosis; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis*; D006801:Humans; D013272:Stomach Diseases / Q000175:diagnosis