| eFigure 1. Before (A and B) and after (C and D) quality control quantile-quantile plots of the Cochran-Armitage trend test nominal (A and C) vs l-corrected (B and D) P values of autosomal single nucleotide polymorphisms (SNPs). The latter P values were corrected for stratification using the method developed by Devlin and Roeder. The SNPs at which the test statistic exceeds 30 are represented by triangles at the top of the plot.
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