1. Department of Dermatology; Sahlgrenska Academy at University of Gothenburg; 413 45 Gothenburg Sweden
2. Dermatochemistry, Department of Chemistry and Molecular Biology; University of Gothenburg; 412 96 Gothenburg Sweden
3. Department of Dermatology and Allergy Centre; Odense University Hospital, University of Southern Denmark; 5000 Odense Denmark
4. Department of Occupational and Environmental Dermatology; Skåne University Hospital, Lund University; 205 02 Malmö Sweden
5. The National Allergy Research Centre, Department of Dermato-allergology; Gentofte Hospital, University of Copenhagen; 2900 Hellerup Denmark
6. Department of Dermatology; University Hospital Virgen Macarena; 41007 Seville Spain
7. Department of Dermatology; Hospital del Mar, Institut Mar d'Investigacions Médiques, Universitat Autònoma; 08003 Barcelona Spain
8. National Skin Centre; 308205 Singapore Singapore
9. Occupational Dermatology Research and Education Centre, Skin and Cancer Foundation; 3053 Victoria Australia
10. Department of Cutaneous Allergy; St John's Institute of Dermatology, St Thomas' Hospital; SE1 7EH London UK