1. Department of Medical Informatics, Biometry and Epidemiology Friedrich‐Alexander‐Universität Erlangen‐Nürnberg Erlangen Germany
2. Dermatology Department Leeds Teaching Hospitals NHS Trust Leeds UK
3. Department of Dermatology University Hospital Antwerp (UZA) and Research group Immunology, Infla‐Med Centre of Excellence, University of Antwerp Antwerp Belgium
4. Department of Dermatology University Hospital Carl Gustav Carus, Technical University Dresden Germany
5. Complejo Hospitalario Universitario Insular Materno Infantil, Universidad de las Palmas de Gran Canaria Las Palmas de Gran Canaria Spain
6. Institute for Interdisciplinary Dermatologic Prevention and Rehabilitation (iDerm) at the University of Osnabrück Osnabrück Germany
7. Department of Dermatology, Venereology and Allergology University Medical Center Göttingen, Göttingen Göttingen Germany
8. Department of Dermatology, Venereology and Allergology St. Josef Hospital, University Medical Center, Ruhr University Bochum Bochum Germany
9. Department of Dermatology University Medical Centre Maribor Maribor Slovenia
10. Department of Public Health, Occupational Medicine University of Trieste Trieste Italy
11. Department of Dermatology Hospital Morales Meseguer Murcia Spain
12. Department of Dermatology Hospital del Mar, Institut Mar d´Investigacions Mèdiques, Universitat Pompeu Fabra de Barcelona Barcelona Spain
13. Department of Health Sciences University Magna Graecia of Catanzaro Catanzaro Italy
14. Division Occupational Medicine Finnish Institute of Occupational Health Helsinki Finland
15. Department of Dermatology, Venerology and Dermato‐oncology Semmelweis University Budapest Hungary
16. Department of Dermatology Amsterdam University Medical Centers Amsterdam The Netherlands
17. Information Network of Departments of Dermatology (IVDK) Institute at the University Medical Centre Göttingen Göttingen Germany
18. Department of Dermatology University Medical Center Groningen, University of Groningen Groningen The Netherlands
19. Department of Dermatology Inselspital, Bern University Hospital, University of Bern Bern Switzerland
20. Dermatology Section, Department of Medicine and Surgery University of Perugia Perugia Italy
21. Department of Skin and Venereal Diseases Lithuanian University of Health Sciences Kaunas Lithuania
22. Occupational Dermatology, Department of Dermatology University Hospital Heidelberg Heidelberg Germany
23. Division of Immunodermatology and Allergy Research, Department of Dermatology and Allergy Hannover Medical School Hannover Germany
24. Department of Dermatology University Hospital and Faculty of Medicine, University of Coimbra Coimbra Portugal