[The relationship of carcinomas and ulcers of the digestive tract to the ABO blood group system].
D000017:ABO Blood-Group System; D001789:Blood Group Antigens; D041981:Gastrointestinal Tract; D006801:Humans; D009369:Neoplasms; D010437:Peptic Ulcer / Q000097:blood*; D014456:Ulcer
D000017:ABO Blood-Group System; D001789:Blood Group Antigens
BLOOD GROUPS; GASTROINTESTINAL SYSTEM/neoplasms; PEPTIC ULCER/blood