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 Allergy Centre, Medical Faculty Carl Gustav Carus, Technical University Dresden Dresden Germany
5. Complejo Hospitalario Universitario Insular Materno Infantil. Universidad de las Palmas de Gran Canaria Las Palmas de Gran Canaria Spain
6. Department of Dermatology, Venereology and Allergology University Medical Center Göttingen Göttingen Germany
7. Department of Dermatology Oxford University Hospitals NHS Trust Oxford UK
8. Department of Dermatology, Venereology and Allergology St. Josef Hospital, Ruhr University Bochum Bochum Germany
9. Clinica Dermatologica, Department of Health Sciences University of Genoa, IRCCS Ospedale Policlinico San Martino Genoa Italy
10. Department of Dermatology Hospital del Mar, Universitat Autònoma de Barcelona Barcelona Spain
11. Department of Dermatology and Environmental Medicine Institute for Interdisciplinary Dermatologic Prevention and Rehabilitation (iDerm), University of Osnabrück Osnabrück Germany
12. Lower Saxony Institute for Occupational Dermatology (NIB) Osnabrück Germany
13. Department of Biomedicine University Hospital Basel Basel Switzerland
14. Occupational Health Unit Finnish Institute of Occupational Health Helsinki Finland
15. Department of Dermatology, Venerology and Dermatooncology Semmelweis University Budapest Hungary
16. Department of Dermatology‐Allergology Amsterdam University Medical Centers Amsterdam The Netherlands
17. Department of Dermatology University Hospital Jena Jena Germany
18. Information Network of Departments of Dermatology Institute at the University Medical Centre Göttingen Göttingen Germany
19. Department of Dermatology University of Groningen, University Medical Center Groningen Groningen The Netherlands
20. Department of Skin and Venereal Diseases Lithuanian University of Health Sciences Kaunas Lithuania
21. Department of Dermatology University Hospital of Erlangen, University of Erlangen‐Nuremberg (FAU) Erlangen Germany
22. Occupational Dermatology, Department of Dermatology University Hospital Heidelberg Heidelberg Germany
23. Department of Dermatology University Hospital and Faculty of Medicine, University of Coimbra Coimbra Portugal