1. National Allergy Research Centre, Department of Dermatology and Allergy; University of Copenhagen, Herlev and Gentofte Hospital; Gentofte, Denmark
2. Department of Dermatology and Allergy; University of Copenhagen; Herlev and Gentofte Hospital Gentofte, Denmark
3. Department of Dermatology and Venereology; Aarhus University Hospital; Aarhus Denmark
4. Department of Dermatology and Allergy Centre; Odense University Hospital; Odense Denmark
5. Dermatology Clinic; Herning Denmark
6. Dermatology Clinic; Aalborg Øst Denmark
7. Dermatology Clinic; Rødovre Denmark
8. Dermatology Clinic; Svendborg Denmark
9. Dermatology Clinic; Hørsholm Denmark
10. Dermatology Clinic; Copenhagen Denmark
11. Dermatology Clinic; Kalundborg Denmark
12. Dermatology Clinic; Bagsvaerd Denmark
13. Dermatology Clinic; Vejle Denmark