Genotype frequency distributions (%) in the two study group, i.e. controls (non-smokers) and cases (smokers).

Abbreviations:aM, major allele; m, minor allele.Symbol: a frequency for M/m or m/m. See text for gene abbreviations. Between-group comparisons of genotype frequencies were corrected for multiple comparisons using the Bonferroni method, in which the threshold P-value is obtained by dividing 0.05 by the number of comparisons, i.e. n = 17, corresponding to the 17 polymorphisms we studied (thus, threshold P-value = 0.003). P-values below the threshold P-value are shown in bold.