Nat. Genet, 40, 1103–1106 (2008), published online 10 August 2008; corrected after print 24 March 2009

In the version of this article initially published, the SNP rs1049550 listed in the abstract was indicated incorrectly as a T>C change. It is a C>T change. On the third page of the article, the haplotype containing rs1049550 was incorrectly listed as TATACC. It should be AGCATT. These errors have been corrected in the HTML and PDF versions of the article.