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Comparison of results for genotyped (in black) and imputed (in grey) SNPs at 2q33 for their association with risk of ESCC. We plotted P-values for 426 genotyped SNPs and 3878 imputed SNPs. For the imputation, we used a hybrid reference of 1000 Genomes Asian set and the Asian component of the DCEG Reference Imputation Set. This figure shows that the genotyped SNPs were as strong as any SNPs in the imputation analysis.
