Frequencies of DLA class II alleles in 66 ESSs with CH and 84 healthy controls.

Altogether, 10 DRB1 alleles, six DQA1 alleles and eight DQB1 alleles were found in the population. The alleles DRB1*00601and DQB1*00701 were observed in a higher frequency in cases while the alleles DRB1*00501and DQB1*00501 were more frequent in controls. Numbers in bold indicate a significant difference between cases and controls. NS; not significant.*After Bonferroni adjustment, significance level would be p