1. Department of Occupational Medicine, Danish Ramazzini Centre Aarhus University Hospital Aarhus Denmark
2. Department of Occupational Medicine, The Regional Hospital Goedstrup University Research Clinic Herning Denmark
3. Department of Dermatology Aarhus University Hospital Aarhus Denmark
4. National Research Centre for the Working Environment Copenhagen Denmark
5. Department of Occupational and Environmental Medicine, Danish Ramazzini Centre Aalborg University Hospital Aalborg Denmark
6. Department of Public Health, Danish Ramazzini Centre Aarhus University Aarhus Denmark
7. Department of Occupational and Environmental Dermatology Lund University, Skane University Hospital Malmö Malmö Sweden
8. Department of Clinical Epidemiology Aarhus University Hospital Aarhus Denmark
9. Institute of Clinical Medicine Aarhus University Aarhus Denmark