[Incidence of peptic ulcer in seamen in the light of their professional work].
D000328:Adult; D000367:Age Factors; D006801:Humans; D008875:Middle Aged; D009326:Naval Medicine; D009784:Occupational Diseases; D009790:Occupations; D010437:Peptic Ulcer / Q000453:epidemiology*; D012767:Ships
Wystepowanie choroby wrzodowej u marynarzy w aspekcie ich pracy zaqodwej