[A survey of onset of peptic ulcer in 10,994 in-patients in Shandong Province (author's transl)].
D000293:Adolescent; D000328:Adult; D000368:Aged; D002681:China; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010437:Peptic Ulcer / Q000150:complications / Q000453:epidemiology*