[Smoking and stomach ulcer].
D004381:Duodenal Ulcer / Q000453:epidemiology / Q000209:etiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009664:Norway; D012907:Smoking; D013276:Stomach Ulcer / Q000453:epidemiology / Q000209:etiology*
Røking og magesår.