1. Ludwig Institute for Cancer Research, Brussels Branch, and Cellular Genetics Unit, Université Catholique de Louvain, Brussels, Belgium
2. The Netherlands Cancer Institute, Amsterdam, The Netherlands
3. Istituto Nazionale per lo Studio e la Cura del Tumori, Milan, Italy
4. Services de Dermatologie, Cliniques Uni‐versitaires Saint‐Luc, Universite Catholique de Louvain, Brussels, Belgium
5. Services de Chirurgie Plastique et, Cliniques Uni‐versitaires Saint‐Luc, Universite Catholique de Louvain, Brussels, Belgium
6. Servicesd'Oncologie Médicale, Cliniques Uni‐versitaires Saint‐Luc, Universite Catholique de Louvain, Brussels, Belgium
7. Service d'Oncologie, Clinique Notre‐Dame, Charleroi, Belgium
8. Oncologie Medicale, Clinique Generate St‐Jean, Brussels, Belgium
9. Dermatologie, Universitair Ziek‐enhuis, Ghent, Belgium
10. Centre Jean Perrin, Clermont‐Ferrand, France
11. Laboratoire d'Oncologie el de Chirurgie Experimentale, Institut Jules Bordet, Universite Libre de Brux‐elles, Brussels, Belgium
12. Krankenhaus Nordwest, II, Mediz‐inische Klinik, HdmatologieIOnkologie, Akademisches Lehrkrankenhaus der Johann‐Wolfgang‐Goethe‐Universitdt, Frankfurt am Main, Germany