Genetic aspects of ulcer disease.
D000017:ABO Blood-Group System; D004200:Diseases in Twins; D004381:Duodenal Ulcer / Q000235:genetics; D005260:Female; D005817:Genetic Counseling; D005819:Genetic Markers; D006801:Humans; D008297:Male; D010435:Pepsinogens / Q000097:blood; D010437:Peptic Ulcer / Q000097:blood / Q000235:genetics*; D013276:Stomach Ulcer / Q000235:genetics
D000017:ABO Blood-Group System; D005819:Genetic Markers; D010435:Pepsinogens