title: An investigation of stomach and duodenal ulcer based on pathomorphological data for ten years.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D004381:Duodenal Ulcer / Q000453:epidemiology* / Q000473:pathology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012737:Sex Factors; D013276:Stomach Ulcer / Q000453:epidemiology* / Q000473:pathology