Epidemiology of peptic ulcer in North India.
D000293:Adolescent; D000328:Adult; D004381:Duodenal Ulcer / Q000453:epidemiology*; D005260:Female; D006801:Humans; D007194:India; D008297:Male; D008875:Middle Aged; D010437:Peptic Ulcer / Q000453:epidemiology*