1. Deb Group Ltd.; Research & Development; Denby Derbyshire UK
2. Leeds Teaching Hospitals NHS Trust; Leeds UK
3. Department of Dermatology, Environmental Medicine, Health Theory; University of Osnabrueck; Osnabrueck Germany
4. Department of Social Medicine, Occupational and Environmental Dermatology; University of Heidelberg; Heidelberg Germany
5. Nottingham NHS Treatment Center; Nottingham UK
6. Department of Dermatology and Allergology; VU University Medical Center Amsterdam; Amsterdam The Netherlands
7. Hautarztzentrum Krefeld; Krefeld Germany
8. Coronel Institute of Occupational Health; Academic Medical Centre; Amsterdam The Netherlands
9. Department of Dermatology; University of California San Francisco; San Francisco CA USA