Methods ABO phenotype and its genetic distribution were investigated in 444 patients with congenital heart disease in center of south region of shandong via blood type genetics and serology.

• 方法选择鲁中南地区先天性心脏病患者444例,采用血型群体遗传学及血型血清学方法,进行ABO血型表现型及基因频率分布调查统计。