Nat. Genet. 47 803–808 (2015); published online 25 May 2015; corrected after print 8 July 2015
In the version of this article initially published, there was an error with the affiliations for author Roman Chrast. His correct affiliations are: Department of Medical Genetics, University of Lausanne, Lausanne, Switzerland; Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden; and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden. The error has been corrected in the HTML and PDF versions of the article.
The online version of the original article can be found at 10.1038/ng.3308