Correction to: European Journal of Human Genetics (2008) xx, xxx–xxx; advance online publication, 9 April 2008; doi:10.1038/ejhg.2008.72

Since the above publication, the authors have noticed an error in the name of the fourth and ninth authors: Loudewijk A Sandkuijl and Lenny van Mourik should be Lodewijk A Sandkuijl and Leny van Mourik.

The typesetters would like to apologize for this mistake.