Helicobacter pylori: the primary cause of duodenal ulceration or a secondary infection?
Hobsley
M
M
Tovey
F I
FI
D004381:Duodenal Ulcer / Q000453:epidemiology / Q000209:etiology*; D016481:Helicobacter Infections / Q000150:complications* / Q000453:epidemiology; D016480:Helicobacter pylori; D006801:Humans