ABO blood groups and stomal ulcer.
D000017:ABO Blood-Group System; D001789:Blood Group Antigens / Q000706:statistics & numerical data*; D006801:Humans; D010437:Peptic Ulcer / Q000097:blood*; D014456:Ulcer
D000017:ABO Blood-Group System; D001789:Blood Group Antigens
BLOOD GROUPS/statistics; PEPTIC ULCER/blood