Blood type gene frequency and mental ability.
D000293:Adolescent; D001741:Black or African American; D001789:Blood Group Antigens; D005260:Female; D005787:Gene Frequency; D005824:Genetics, Behavioral; D005838:Genotype; D006801:Humans; D011247:Pregnancy; D011581:Psychological Tests; D014427:Twins
D001789:Blood Group Antigens