title: [Cases of upper digestive tract hemorrhages examined by endoscopy].
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D019723:Endoscopes; D005260:Female; D005336:Fiber Optic Technology; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis*; D006801:Humans; D008297:Male; D008875:Middle Aged
vernacular_title: Analiza przypadków krwawienia z górnego adcinka przewodu pokarmowego badanych endoskopowo.