We used several approaches to determine whether genes implicated by our results (i.e., those harboring markers with p<10−3) had been previously associated with psychiatric phenotypes: this included a manual literature search in PubMed (http://www.ncbi.nlm.nih.gov/pubmed/), querying the NCBI Gene database (http://www.ncbi.nlm.nih.gov/gene), and querying the NCBI Association Results browser (http://www.ncbi.nlm.nih.gov/projects/gapplusprev/sgap_plus.htm). Information obtained through the Association Results browser is limited to the results of genome-wide screens. Note that the Association Results browser returns records for genes whose associations have been “pre-computed” at NCBI, but for which no publication is available. Those results are cited here as being reported by NCBI.
