1. Faculty of Medicine University of Iceland Saemundargata 2 Reykjavik 101 Iceland
2. Department of Dermatology University of Connecticut 21 South Road Farmington CT USA
3. Icelandic Cancer Registry Skogarhlid 8 Reykjavik 105 Iceland
4. Department of Dermatology NYU Langone Health New York NY USA
5. Department of Dermatology The Mount Sinai Hospital 1 Gustave L. Levy Place NY USA
6. The George Washington University School of Medicine and Health Sciences Washington DC USA
7. Department of Pathology Landspitali National‐University Hospital Hringbraut Reykjavik 101 Iceland