1. Department of Dermatology,
2. Department of Haematology,
3. Department of Pathology,
4. Department of Radiotherapy, and
5. Department of Biomedical Data Sciences, Leiden University Medical Centre, Leiden, The Netherlands;
6. Department of Dermatology, Academic Medical Centre and Vrije University Medical Centre, Amsterdam, The Netherlands;
7. Department of Dermatology, Erasmus Medical Centre, Rotterdam, The Netherlands;
8. Department of Dermatology, University Medical Centre Groningen, Groningen, The Netherlands;
9. Department of Dermatology, Radboud University Medical Centre, Nijmegen, The Netherlands;
10. Department of Dermatology, University Medical Centre Utrecht, Utrecht, The Netherlands; and
11. Department of Dermatology, Maastricht University Medical Centre, The Netherlands