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