1. Laboratory of Experimental Cancer Research, Department of Radiation Oncology and Experimental Cancer Research, Ghent University, Ghent, Belgium
2. Cancer Research Institute Ghent (CRIG), Ghent, Belgium
3. Department of Surgery, Ghent University Hospital, Ghent, Belgium
4. Department of Pathology, Erasme University Hospital, Université Libre de Bruxelles, Brussels, Belgium
5. Institut National de la Santé et de la Recherche Médicale, INSERM, Department of Molecular and Clinical Oncology, Université Paris VI Pierre et Marie Curie, Paris, France