The ABO blood groups and cancer.
D000017:ABO Blood-Group System; D001789:Blood Group Antigens; D006801:Humans; D009369:Neoplasms / Q000453:epidemiology*; D010437:Peptic Ulcer / Q000453:epidemiology*; D013274:Stomach Neoplasms / Q000453:epidemiology*
D000017:ABO Blood-Group System; D001789:Blood Group Antigens