1. Dermatology DepartmentMelanoma Unit, Hospital Clínic de Barcelona, IDIBAPS, Universitat de BarcelonaBarcelona Spain
2. Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER)Barcelona Spain
3. Department of DermatologyUniversity Hospital Essen, Essen, Germany & German Cancer ConsortiumHeidelberg Germany
4. Biochemical and Molecular Genetics Service, Melanoma Unit, Hospital Clínic de BarcelonaBarcelona Spain