Correction to: European Journal of Human Genetics doi: 10.1038/ejhg.2011.175; published online 21 September 2011

Since the publication of this article, the authors noted that NIPBL was mistyped in several places. This has now been rectified and the corrected article appears in this issue. The HTML and online PDF versions have also been rectified and now carry the correct name.

The authors would like to apologise for any inconvenience caused.