Comparing our callset with GWAS data in the same samples at overlapping sites suggested high sensitivity for common variants (98.6% NRS). To assess quality of low frequency variant calls in a comparable sequencing dataset we compared CGI data to Omni chip from the 1000 Genomes project (Supplementary Table 2). This comparison resulted in 95.65% NRS, 1.79% NRD and 1.12% NRD for novel variants.