GenomeStudio’s heritability report algorithm was used to identify potentially discrepant parent-child relationships and reveal non-Mendelian genotyping errors. Erroneous SNPs were removed before homozygosity analysis with PLINK. More than 99.9% of SNPs are inherited in a Mendelian manner from unaffected mothers to probands verifying correct parent child relationship. To access the data, click or select the words “Appendix 3.” This will initiate the download of a compressed (pdf) archive that contains the file.