title: [Early endoscopy in the etiological diagnosis of upper gastrointestinal hemorrhage].
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D004935:Esophageal Diseases / Q000175:diagnosis; D004938:Esophageal Neoplasms / Q000175:diagnosis; D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis* / Q000209:etiology; D005773:Gastroscopy; D006801:Humans; D008297:Male; D008875:Middle Aged; D013274:Stomach Neoplasms / Q000175:diagnosis
vernacular_title: La endoscopia precoz en el diagnóstico etiológico de la hemorragia digestiva alta (HDA).