[On the contradictory behavior of blood groups A 1 and A 2. An additional contribution to the problem of relations of blood groups to diseases].
D000017:ABO Blood-Group System; D001789:Blood Group Antigens; D006042:Goiter; D006801:Humans; D009369:Neoplasms; D010437:Peptic Ulcer; D013923:Thromboembolism
D000017:ABO Blood-Group System; D001789:Blood Group Antigens
ABO FACTORS; GOITER; NEOPLASMS; PEPTIC ULCER; THROMBOEMBOLISM