[Correlation between blood groups and morbidity in the light of relative incidence of diseases in surgical patients].
D001660:Biliary Tract Diseases / Q000453:epidemiology; D001789:Blood Group Antigens; D006801:Humans; D007519:Isoantigens; D009017:Morbidity; D010437:Peptic Ulcer / Q000453:epidemiology; D011044:Poland; D013274:Stomach Neoplasms / Q000453:epidemiology
D001789:Blood Group Antigens; D007519:Isoantigens