1. Department of Dermatology and Venereology; Aarhus University Hospital; Aarhus Denmark
2. National Allergy Research Centre; Department of Dermatology and Allergy, Herlev and Gentofte Hospital; University of Copenhagen; Hellerup Denmark
3. Department of Dermatology and Allergy Centre; Odense University Hospital; Odense Denmark
4. Department of Dermatology and Allergy; Herlev and Gentofte Hospital; University of Copenhagen; Hellerup Denmark