ABO blood groups and secretor character in duodenal ulcer; population and sibship studies.
D000017:ABO Blood-Group System; D001669:Biochemical Phenomena; D001692:Biological Transport; D001789:Blood Group Antigens; D004381:Duodenal Ulcer; D006801:Humans; D010437:Peptic Ulcer / Q000097:blood*
D000017:ABO Blood-Group System; D001789:Blood Group Antigens
BLOOD GROUPS; PEPTIC ULCER/blood in