Nat. Genet. 44, 681–684 (2012); published online 29 April 2012; corrected after print 6 June 2012; corrected after print 10 July 2013

In the version of this article initially published, the following statement was omitted from the Acknowledgments: “We acknowledge use of data from the database of Genotypes and Phenotypes (dbGaP) from the NCBI, US National Library of Medicine. Research support to collect data and develop an application to support High Density SNP Association Analysis of Melanoma (phs000187) was provided by grants 3P50CA093459, 5P50CA097007, 5R01ES011740 and 5R01CA133996 from the US National Institutes of Health. This study also used, in part, data from the National Institute of Neurological Disorders and Stroke (NINDS) dbGaP database from the CIDR:NGRC Parkinson's Disease Study (phs000196).” The error has been corrected in the HTML and PDF versions of the article.