title: A population study of peptic ulcer. Its relation to various ethnic and socioeconomic factors.
mesh_terms: D000328:Adult; D000352:Africa, Northern; D000367:Age Factors; D004381:Duodenal Ulcer / Q000453:epidemiology; D004522:Educational Status; D004641:Emigration and Immigration; D005006:Ethnicity; D005060:Europe; D005260:Female; D006801:Humans; D007182:Income; D007492:Iran; D007493:Iraq; D007557:Israel; D008297:Male; D008875:Middle Aged; D010437:Peptic Ulcer / Q000453:epidemiology*; D012737:Sex Factors; D013276:Stomach Ulcer / Q000453:epidemiology