TNF and vitiligo: The strength of the association between the TNF-α-308G/A polymorphism and risk of AA and vitiligo was assessed by AORs with the corresponding 95%CI for the following genetic models: 1) the genotypic model (G/G, G/A, and A/A) 2) the dominant genetic model (A/A+G/A vs. G/G) (A is the minor allele and G is the major allele); 3) the recessive genetic model (A/A vs. G/G+G/A) and 4) the A allele vs. the G allele analysis (data is shown in Table 4).