1. Department of Dermatology Hospital Universitari Vall d'Hebron, Universitat Autònoma de Barcelona Barcelona Spain
2. Servicio de Dermatología Instituto Valenciano de Oncología Valencia Spain
3. Department of Dermatology Fundación Jiménez Díaz Madrid Spain
4. Department of Dermatology Hospital de Bellvitge, IDIBELL, University of Barcelona Barcelona Spain
5. Dermatology Unit, Department of Medicine Università di Padova Padova Italy
6. Department of Dermatology Istanbul University, Istanbul Medical Faculty Istanbul Turkey
7. Department of Dermatology Leiden University Medical Center Leiden The Netherlands
8. Department of Dermatology University of Groningen, University Medical Center Groningen Groningen The Netherlands
9. Department of Dermatology Edouard Herriot Hospital Group, Hospices Civils de Lyon Lyon France
10. Centre for Cell Biology and Cutaneous Research Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London London UK
11. Department of Dermatovenereology Faculty of Medicine, Charles University Pilsen The Czech Republic
12. Department of Dermatology Medical University of Vienna Vienna Austria
13. Service de Dermatologie Hôpital Erasme, Université Libre de Bruxelles Brussels Belgium
14. Department of Dermatology Hospital Universitari Mútua de Terrassa Barcelona Spain
15. Department of Dermatology University of São Paulo São Paul Brazil
16. Department of Dermatology University Clinic of Navarra, School of Medicine, University of Navarra Pamplona Spain
17. Laboratory of Molecular Biology Fundación Instituto Valenciano de Oncología Valencia Spain
18. IVO‐CIPF Joint Research Unit of Cancer, Príncipe Felipe Research Center (CIPF) Valencia Spain
19. Department of Pathology School of Medicine, Catholic University of Valencia ‘San Vicente Martir’ Valencia Spain
20. Dermatopathologie Friedrichshafen Germany
21. Kempf und Pfaltz Histologische Diagnostik and Department of Dermatology University Hospital Zurich Zürich Switzerland
22. Department of Dermatology Başkent University Faculty of Medicine Ankara Turkey