A statistical study of intrauterine selection factors related to the ABO system.
D000017:ABO Blood-Group System; D001787:Blood Group Incompatibility; D005260:Female; D005333:Fetus; D005828:Genetics, Population; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D011247:Pregnancy; D012204:Rh-Hr Blood-Group System
D000017:ABO Blood-Group System; D012204:Rh-Hr Blood-Group System