1. Department of Dermatology; Maastricht University Medical Centre; Maastricht the Netherlands
2. GROW; School for Oncology and Developmental Biology; Maastricht University; Maastricht the Netherlands
3. Department of Dermatology; Catharina Hospital Eindhoven; Eindhoven the Netherlands
4. Department of Pathology; Maastricht University Medical Centre; Maastricht the Netherlands