1. National Allergy Research Centre, Department of Dermatology and Allergy, Herlev and Gentofte Hospital University of Copenhagen Hellerup Denmark
2. Department of Dermatology, Environmental Medicine and Health Theory University of Osnabrück Osnabrück Germany
3. Institute for Interdisciplinary Dermatologic Prevention and Rehabilitation (iDerm) at the University of Osnabrück Osnabrück Germany