Duodenal ulcer in childhood.
D001789:Blood Group Antigens; D002648:Child; D002675:Child, Preschool; D004381:Duodenal Ulcer / Q000453:epidemiology* / Q000235:genetics; D005260:Female; D005743:Gastrectomy; D006801:Humans; D008297:Male; D012606:Scotland
D001789:Blood Group Antigens