Relationship of duodenal ulcer with diet, smoking, family history and blood group.
D000017:ABO Blood-Group System / Q000235:genetics*; D000328:Adult; D001459:Bangladesh; D004381:Duodenal Ulcer / Q000235:genetics*; D005247:Feeding Behavior; D005260:Female; D006801:Humans; D008297:Male; D012306:Risk; D012907:Smoking
D000017:ABO Blood-Group System