1. Department of Dermatology and Allergy; Herlev and Gentofte Hospital; University of Copenhagen; Hellerup Denmark
2. Department of Dermatology; Aarhus University Hospital; Aarhus Denmark
3. Department of Dermatology; Bispebjerg Hospital; Copenhagen Denmark
4. Department of Dermatology and Allergy Centre; Odense University Hospital; Odense Denmark
5. Skin Clinic; Nykøbing Falster Denmark
6. Department of Dermatology; Roskilde Hospital; Roskilde Denmark