[A study on a relationship between the anatomical characteristics of the gastro-duodenal junction and the location of duodenal ulcer].
D000293:Adolescent; D000328:Adult; D000368:Aged; D004381:Duodenal Ulcer / Q000473:pathology*; D004386:Duodenum / Q000033:anatomy & histology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009130:Muscle, Smooth / Q000033:anatomy & histology; D011708:Pylorus / Q000033:anatomy & histology* / Q000473:pathology; D013276:Stomach Ulcer / Q000473:pathology