1. Department of Dermatology University Hospital Zurich Zurich Switzerland
2. Institute of Immunobiology Kantonsspital St. Gallen St. Gallen Switzerland
3. Department of Dermatology, Venerology and Allergology Kantonsspital St. Gallen St. Gallen Switzerland
4. Inserm U981 Gustave Roussy Cancer Campus Université Paris Saclay Villejuif France
5. Service of Dermatology and Venerology CHUV Lausanne Switzerland
6. Department of Genetic Medicine and Development University of Geneva Medical School Geneva Switzerland
7. Dermatologie Gossau Gossau Switzerland
8. PATHOdiagnostics AG Herisau Switzerland
9. Institute of Pathology Kantonsspital St. Gallen St. Gallen Switzerland
10. Department of Dermatology University Hospital Basel Basel Switzerland
11. Department of Dermatology Columbia University Irving Medical Center New York USA
12. Department of Dermatology and Allergology Ludwig‐Maximilian‐University of Munich Munich Germany
13. Department of Genetics & Development Columbia University Irving Medical Center New York NY USA
14. University Paris 7Saint Louis Hospital Paris France