1. Departments ofDepartment of DermatologyRadboud University Medical Centre Nijmegenthe Netherlands
2. Department of Dermatology Netherlands Cancer Institute Amsterdam the Netherlands
3. Department of Dermatology Amsterdam University Medical Centres Amsterdam the Netherlands
4. Department of Dermatology Rijnstate Hospital Arnhem the Netherlands
5. Department of Dermatology Canisius Wilhelmina Hospital Nijmegen the Netherlands
6. Department of Health EvidenceRadboud University Medical Centre Nijmegenthe Netherlands
7. Department of Pathology Radboud University Medical Centre Nijmegen the Netherlands