1. Department of Dermato‐Allergology, National Allergy Research Centre Copenhagen University Hospital Gentofte Copenhagen Denmark
2. University of Copenhagen Copenhagen Denmark
3. National Research Centre for the Working Environment Copenhagen Denmark
4. Department of Occupational and Environmental Medicine, Bispebjerg and Frederiksberg Hospital University of Copenhagen Copenhagen Denmark
5. Unit of Social Medicine Copenhagen University Hospital Frederiksberg Frederiksberg Denmark
6. Department of Dermatology, Environmental Health and Health Theory University of Osnabrück and Institute of Interdisciplinary Dermatological Prevention and Rehabilitation (iDerm) at the University of Osnabrück Osnabrück Germany