All DNA samples were genotyped on the Illumina HumanOmni1-Quad v1.0 microarray containing 988,306 autosomal SNPs. Genotyping was conducted at the Center for Inherited Disease Research (CIDR) and the Yale Center for Genome Analysis (YCGA). SNP genotypes were called using GenomeStudio software V2011.1 and genotyping module version 1.8.4 (Illumina, San Diego, CA, USA).
