[Disputable problems of the incidence and epidemiology of diseases of the digestive organs].
D004812:Epidemiologic Methods; D004957:Estonia; D005767:Gastrointestinal Diseases / Q000453:epidemiology*; D006801:Humans
Diskussionnye voprosy zabolevaemosti i epidemiologii bolezneĭ organov pishchevareniia.