1. Department of Clinical Social Medicine; Occupational and Environmental Medicine; University Hospital Heidelberg; Germany
2. Department of Dermatology; University of Southern Denmark; Denmark
3. APHP Hôpitaux Universitaires Henri Mondor; Créteil France
4. Occupational and Environmental Dermatology Unit; State University Hospital; Groningen The Netherlands
5. Clinic for Dermatology and Dermatological Allergology; University Hospital Jena; Germany
6. Department of Dermatology; University of Nottingham; United Kingdom
7. Department of Clinical and Experimental Occupational Dermatology; Institute for Prevention and Occupational Medicine; Ruhr University Bochum (IPA); Germany
8. Hospital del Mar; Parc de Salut Mar; Universitat Autonoma Barcelona; Spain
9. Occupational Dermatological Research & Education Center; Victoria Australia
10. Royal Victoria Hospital; Montreal Canada
11. University of Copenhagen; Department of Dermatology D; Bispebjerg Hospital; Copenhagen Denmark