Peptic ulcer. Advances in diagnosis.
D001466:Barium Sulfate; D001706:Biopsy; D004381:Duodenal Ulcer / Q000000981:diagnostic imaging; D005773:Gastroscopy; D006801:Humans; D010437:Peptic Ulcer / Q000175:diagnosis* / Q000000981:diagnostic imaging; D010781:Photography; D011859:Radiography; D013276:Stomach Ulcer / Q000000981:diagnostic imaging
D001466:Barium Sulfate