The mean genotyping rate was 99% (range 92%-100%) and minor allele frequencies (MAF) were > 0.04 (see Online Resource Table 1 for marker position and MAFs). Genotype frequencies were similar to the HapMap CEPH population (mean difference in genotype frequencies = .03, minimum .002, maximum .08) , and all SNPs were in Hardy Weinberg equilibrium (HWE) as judged by the HWE exact SNP Tests (all p-values > .001) in Haploview.