Correction to: European Journal of Human Genetics doi:10.1038/sj.ejhg.5201721; published online 11 October 2006.
Since the above publication, Dr Schöls has noticed that his affiliation information is incorrect. The correct affiliation should have been:
Department of Neurology and Hertie-Institute for Clinical Brain Research, University of Tübingen, Tübingen, Germany.
The online version of the original article can be found at 10.1038/sj.ejhg.5201721