Distribution of HLA-DRB1 and HLA-DQB1 alleles in the Wolaita, and comparison of their frequencies with the Ethiopian Oromo and Amhara ethnic groups.

a<p>The denominator for each proportion is total number of chromosomes = 2 n.</p>b<p>Source: HLA Nomenclature, <a href="http://www.allelefrequencies.net/" target="_blank">http://www.allelefrequencies.net/</a>.</p>c<p>The symbol NA means P values were not calculated because HLA-DRB1*12 and HLA-DQB1*01 were absent in Oromo and Amhara.