SNPs: We aimed to tag at r2=1 all SNPs with MAF ≥0.01 in the HapMap CEU samples plus SNPs identified by de novo polymorphism discovery of exons. This panel of SNPs was derived using Tagger (Haploview, version 4.1(14)) with forced inclusion of all synonymous and non-synonymous variants identified by de novo discovery and from public databases, and all SNPs associated with expression of ZNF804A mRNA in the GeneVar database. We also force included SNPs previously genotyped in the previous GWAS(4).