Variant call results from first cohort analysis. All positions are given in reference to chromosome 3 of hg19. For each program, a '+' value indicates that a variant call was made by that program for that variant position and pool. Column 'P' indicates the position is in exonic sequence (not intronic). Column 'Valid' indicates validation results for each variant-pool tested; '+' indicates a valid call and '-'indicates an invalid call. Column 'Dist' indicates the position of the variant call in each amplicon.