Acknowledgements

We thank Ron Kerkhoven and Marja Nieuwland for the microarray experiments, Lorian Slagter-Menkema (Groningen) and Mirjam Mastik for the immunohistochemistry, and Maarten Wildeman for the tissue microarray.

Financial support

This was a Dutch Cooperative Study Group on Head and Neck Cancer study (NWHHT-2007-02), funded by the Dutch Cancer Society (NKI-2007-3941).