[New point of view on the relations between duodenal ulcer and the ABO blood groups].
D000017:ABO Blood-Group System; D001789:Blood Group Antigens; D004381:Duodenal Ulcer; D006801:Humans; D010437:Peptic Ulcer / Q000235:genetics*
D000017:ABO Blood-Group System; D001789:Blood Group Antigens
BLOOD GROUPS; PEPTIC ULCER/genetics