title: [Diagnostic and therapeutic difficulties in combined peptic ulcer and disease of the extrahepatic biliary system].
mesh_terms: D000328:Adult; D000368:Aged; D001660:Biliary Tract Diseases / Q000175:diagnosis* / Q000601:surgery; D002031:Bulgaria; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010437:Peptic Ulcer / Q000175:diagnosis* / Q000601:surgery
vernacular_title: Diagnostichni i lechebni trudnosti pri suchetanie na iazvena bolest sus zaboliavane na ekstrakhepatalnata zhluchna sistema