1. Department of Immunology and Microbiology, University of Copenhagen, Copenhagen, Denmark;
2. Department of Dermatology, Aarhus University Hospital, Skejby, Aarhus, Denmark;
3. Division of Dermatology, University of Ottawa, Ottawa, ON, Canada;
4. Department of Dermatology, Copenhagen University Hospital, Bispebjerg, Copenhagen, Denmark;
5. Faculty of Medicine and Health Science, School of Veterinary Medicine and Science, University of Nottingham, Loughborough, United Kingdom;
6. Division of Dermatology, McGill University Health Centre, Montréal, QC, Canada;
7. Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, PA;
8. Department of Biomedicine, Aarhus University, Aarhus, Denmark; and
9. Department of Pathology, New York University School of Medicine, New York, NY