[Characteristics of the present-day course of peptic ulcer].
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D004381:Duodenal Ulcer / Q000453:epidemiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010437:Peptic Ulcer / Q000150:complications / Q000453:epidemiology* / Q000209:etiology; D013276:Stomach Ulcer / Q000453:epidemiology
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