1. Kempf und Pfaltz Histologische Diagnostik Zurich Switzerland
2. Department of Dermatology University Hospital Zurich Zurich Switzerland
3. Department of Pathology Hôpital Maisonneuve‐Rosemont Montréal QC Canada
4. Department of Dermatology
5. Department of Clinical Pathology Leiden University Medical Center Leiden the Netherlands
6. University of Milan, Director U.O.C. of Dermatology Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico of Milan Milan Italy
7. Department of Health Sciences University of Florence School of Human Health Sciences and Division of Histopathology and Molecular Diagnostics, Careggi University Hospital Florence Italy
8. Institute of Pathology University of Würzburg Würzburg Germany
9. Department of Dermatology Medical University of Graz Graz Austria
10. Service de Dermatologie du Pr F. Caux Hôpital Avicenne Bobigny CEDEX France
11. Department of Pathology Saint‐Louis Hospital, Assistance Publique‐Hôpitaux de Paris, Paris University INSERM U976 Paris France
12. NHS Greater Glasgow and Clyde Glasgow UK
13. Department of Dermatology, University Hospital Lausanne, Faculty of Biology and Medicine University of Lausanne CH‐1011 Lausanne Switzerland
14. Skin and Allergy Hospital Helsinki University Central Hospital Helsinki Finland
15. Gloucestershire Hospitals NHS Foundation Trust, Gloucestershire Cellular Pathology Laboratory, Cheltenham General Hospital Cheltenham UK
16. Department of Dermatopathology St John’s Institute of Dermatology, St Thomas’ Hospital London UK
17. St John’s Institute of Dermatology Guy’s and St Thomas’ NHS Foundation Trust London UK
18. Department of Pathology, Section Hematopathology and Lymph Node Registry University Hospital Schleswig‐Holstein Campus Kiel Kiel Germany
19. Department of Dermatology and Allergology University Hospital Schleswig‐Holstein Campus Kiel Kiel Germany
20. Department of Dermatology University Medical Center Mannheim Mannheim Germany
21. Department of Dermatology, Venereology and Allergology and Skin Cancer Center University Hospital Würzburg Würzburg Germany
22. Department of Dermatology University Hospital Birmingham Birmingham UK
23. Dermatology Unit, Department of Health Sciences University of Florence Medical School Florence Italy
24. Department of Dermatology, Venerology, Allergology and Phlebology, Johannes Wesling Klinikum Minden University Clinic Ruhr‐Universität Bochum Minden Germany
25. Department of Dermatology Ludwig‐Maximilian University Hospital of Munich Munich Germany
26. Dermatologic Clinic, Department of Medical Sciences University of Turin Medical School Torino Italy
27. Department of Dermatology Huashan Hospital, Fudan University Shanghai China
28. Clinica Ricarda Palma Lima Peru
29. University of Auckland Auckland New Zealand
30. Unit of Dermatology Cancer Research Centre of Lyon, Hôpital Lyon Sud, Hospices Civils de Lyon, Université Claude Bernard Lyon 1 France
31. Institute of Oncology Lisbon Portugal
32. LDPath London UK