Duodenal ulceration; a gastroscopic study of the gastric mucosa and its surgical significance.
FREEMAN
H
H
D004381:Duodenal Ulcer; D005753:Gastric Mucosa; D005773:Gastroscopy; D006801:Humans; D009092:Mucous Membrane; D010437:Peptic Ulcer / Q000209:etiology*; D013270:Stomach