Correction to: Cell Death and Differentiation 2006; doi:10.1038/sj.cdd.4402000. Advance online publication, 16 June 2006

In this article, published online 16.06.06, the authors have identified there has been an error in the initial of one of the authors names.

N Harald should have been H Niederegger.

The authors would like to apologize for any confusion caused.