1. Department of Dermatology University Hospital Zealand Sygehusvej 5 4000 Roskilde Denmark
2. Department of Dermatology Faculty of Health and Medical Sciences University of Copenhagen Denmark
3. Department of Clinical Immunology Naestved Hospital Denmark
4. Department of Clinical Immunology Aarhus University Hospital Denmark
5. Department of Clinical Immunology Odense University Hospital Denmark
6. Department of Clinical Immunology Aalborg University Hospital Denmark
7. Department of Clinical Immunology Copenhagen University Hospital Denmark
8. Department of Epidemiology Research Statens Serum Institut Denmark
9. Department of Hematology Rigshospitalet Denmark
10. Novo Nordisk Foundation Center for Protein Research Faculty of Health and Medical Sciences University of Copenhagen Denmark