1. Department of Dermatology and Allergy Herlev and Gentofte Hospital University of Copenhagen Hellerup Denmark
2. Greenlandic University Nuuk Greenland
3. Copenhagen Research Group for Inflammatory Skin (CORGIS) Hellerup Denmark
4. Department of Epidemiology Research Statens Serum Institute Copenhagen Denmark
5. Department of Dermatology Ichan School of Medicine at Mount Sinai Manhattan NY USA
6. Department of Dermatology Bispebjerg HospitalUniversity of Copenhagen Copenhagen Denmark