[On the biological and environmental characteristics of ulcer disease in man. (Clinico-statistical research)].
D000328:Adult; D000367:Age Factors; D000368:Aged; D001789:Blood Group Antigens; D004777:Environment; D006760:Hospitalization; D006801:Humans; D007558:Italy; D008297:Male; D008393:Marriage; D008875:Middle Aged; D010437:Peptic Ulcer / Q000453:epidemiology*; D010439:Peptic Ulcer Perforation / Q000453:epidemiology*; D012424:Rural Population; D012621:Seasons; D013223:Statistics as Topic; D014505:Urban Population
D001789:Blood Group Antigens
Sui caratteri biologico-ambientali della malattia ulcerosa nell'uomo. (Ricerca clinico-statistica)