1. Department of Dermatology and Allergy, Herlev and Gentofte Hospital, University of Copenhagen, Hellerup, Denmark
2. Copenhagen Research Group for Inflammatory Skin, Herlev and Gentofte Hospital, Hellerup, Denmark
3. Department of Dermatology, Bispebjerg Hospital, Copenhagen, Denmark
4. Department of Dermatology, Aarhus University Hospital, Aarhus, Denmark
5. Department of Dermatology, Zealand University Hospital, Roskilde, Denmark
6. Dermatology Clinic, Nykoebing Falster, Denmark
7. Department of Dermatology, Odense University Hospital, Odense, Denmark