1. 1LEO Foundation Skin Immunology Research Center, Department of Immunology and Microbiology, University of Copenhagen, Copenhagen, Denmark
2. 2Department of Dermatology, Aarhus University Hospital, Aarhus, Denmark
3. 3Department of Dermatology and Venereology, Region Västra Götaland, Sahlgrenska University Hospital, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
4. 4Department of Dermatology and Venereology, University Hospital Centre (CHUV) and University of Lausanne (UNIL), Lausanne, Switzerland
5. 5Department of Pathology, New York University School of Medicine, New York, NY
6. 6Department of Dermatology, Columbia University Irving Medical Center, New York, NY
7. 7Division of Hematology/Oncology, Columbia University Herbert Irving Comprehensive Cancer Center, New York, NY
8. 8Department of Dermatology, University Hospital Würzburg, Würzburg, Germany
9. 9Department of Dermatology, Bispebjerg and Frederiksberg Hospital, Copenhagen, Denmark