1. Reference Centre for Rare Skin Diseases Dermatology Department Larrey Hospital Toulouse France
2. Department of Medical Sciences Uppsala University Uppsala Sweden
3. Department of Dermatology University Hospital of Münster Von‐Esmarch‐Straße 58, D‐48149 Münster Germany
4. Department of Dermatology and Allergy Centre Odense University Hospital Odense Denmark
5. Hospital de Egas Moniz Centro Hospitalar Lisboa Ocidental Lisbon Portugal
6. Ichthyosis Support Group PO Box 1242 Yateley GU47 7FL U.K.
7. Association Ichtyose France Bellerive sur Allier France
8. Department of Dermatology Reference Center for Genodermatoses and Rare Skin Diseases (MAGEC) Paris France
9. Institut Imagine Université Descartes Sorbonne Paris Cité Hôpital Necker‐Enfants Malades Paris
10. Dermatology Division Bambino Gesù Children's Hospital‐IRCCS Rome Italy
11. Department of Dermatovenereology University Medical Centre Ljubljana Faculty of Medicine University of Ljubljana Ljubljana Slovenia
12. Institute of Human Genetics Medical Center – University of Freiburg Faculty of Medicine University of Freiburg Freiburg Germany
13. Department of Dermatology Institute of Clinical Research in Malmö Skåne University Hospital Lund University Malmö Sweden
14. Department of Dermatology, Inselspital Bern University Hospital University of Bern Bern Switzerland
15. Department of Dermatology, Venereology and Allergology Medical University of Innsbruck Innsbruck Austria
16. Department of Dermatology Hôpital de Beaumont Lausanne Switzerland
17. Epithelial Differentiation and Rheumatoid Autoimmunity Unit (UDEAR) UMR 1056 Inserm – Toulouse 3 University Purpan Hospital Toulouse France
18. Department of Dermatology Hôpital Henri Mondor EA EpiDerm UPEC‐Université Paris‐Est Créteil 94010 Créteil France
19. Dermatology Department Iuliu Haţieganu University of Medicine and Pharmacy Cluj‐Napoca Romania
20. Corneoplastic Unit Queen Victoria Hospital NHS Trust East Grinstead U.K.
21. Department of Ear, Nose and Throat Hospital Universitario Son Espases Palma de Mallorca Spain
22. Division of Pediatric Dermatology and Allergology Auf Der Bult Children's Hospital Hanover Germany
23. Department of Dermatology Royal London Hospital Barts Health NHS Trust London E1 1BB U.K.
24. Department of Dermatology, Venereology and Paediatric Dermatology Medical University of Lublin Lublin Poland
25. ULB‐Erasme Hospital Department of Dermatology Brussels Belgium
26. Department of Dermatology and Centre for Rare Disorders Oslo University Hospital Oslo Norway
27. Department of Dermatology Maastricht University Medical Centre GROW Research School for Oncology and Developmental Biology Maastricht the Netherlands
28. Selbsthilfe Ichthyose Kürten Germany
29. Department of Dermatology University Hospitals Leuven Leuven Belgium
30. Department of Microbiology and Immunology KU Leuven Belgium
31. Centre for Cell Biology and Cutaneous Research Blizard Institute Barts and the London School of Medicine and Dentistry Queen Mary University of London London U.K.
32. Hautarztpraxis am Buddenturm Rudolf‐von‐Langen‐Straße 55 D‐48147 Münster Germany
33. Department of Dermatology Hospital Infantil Niño Jesús Madrid Spain