[Gastroduodenal ulcers among railroad personnel].
D005060:Europe; D006801:Humans; D009784:Occupational Diseases / Q000453:epidemiology*; D009787:Occupational Medicine; D010437:Peptic Ulcer / Q000453:epidemiology*; D011890:Railroads
Les ulcères gastroduodénaux parmi le personnel des chemins de fer.