1. University of Iceland Saemundargata 2 101 Reykjavik Iceland
2. University of Connecticut Department of Dermatology 263 Farmington Ave Farmington CT 06003 USA
3. NYU Langone Health, Department of Dermatology New York NY 10016 USA
4. Icelandic Cancer Registry Skogarhlid 8 105 Reykjavik Iceland
5. Mount Sinai Department of Dermatology One Gustave L. Levy Place NY 10029 USA
6. The George Washington University School of Medicine and Health Sciences Washington DC USA
7. Faculty of Medicine University of Iceland Saemundargata 2 101 Reykjavik Iceland
8. Department of Pathology Landspitali National‐University Hospital Hringbraut 101 101 Reykjavik Iceland