1. Department of Dermatology Center of Pediatric Dermatology Erasmus MC University Medical Center Rotterdam‐Sophia Children’s Hospital Rotterdam The Netherlands
2. Department of Clinical Genetics Clinical Institute Denmark & Odense University Hospital University of Southern Denmark Odense Denmark
3. Clinic and Policlinic for Dermatology and Venereology University Medical Center Rostock Rostock Germany
4. Department of Dermatology Reference Center for Genodermatoses (MAGEC) Necker‐Enfants Malades Hospital (AP‐HP5) Imagine Institute, INSERM Paris‐Centre University Paris France
5. Department of Dermatology University Medical Center Groningen University of Groningen Groningen the Netherlands
6. Department of Health Sciences Section of Dermatology USL Toscana Centro Rare Diseases Unit University of Florence Florence Italy
7. Dermatology Unit and Genodermatosis Unit, Genetics and Rare Diseases Research Division Bambino Gesù Children's Hospital, IRCCS Rome Italy
8. Institute of Human Genetics Medical Faculty and Medical Center University of Freiburg Freiburg Germany
9. Department of Dermatology Maastricht University Medical Center Maastricht The Netherlands
10. GROW School for Oncology and Developmental Biology Maastricht University Medical Center Maastricht The Netherlands
11. Pediatrics Department Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico Milano Italy
12. Department of Genetics University Medical Center Groningen University of Groningen Groningen the Netherlands
13. Department of Dermatology and Allergology University of Helsinki and Helsinki University Central Hospital, HUS Helsinki Finland
14. Department of Dermatology Medical Center‐University of Freiburg Faculty of Medicine University of Freiburg Freiburg Germany
15. Department of Dermatology Hospital Infantil Niño Jesús Madrid Spain
16. Pediatric Dermatology NHS Foundation Trust London UK
17. Dermatology Department Reference Center for Rare Skin Diseases Toulouse France
18. Department of Dermatology, Venereology and Dermatooncology Semmelweis University Budapest Hungary
19. Dermatology – IRCCS Policlinico di Sant'Orsola ‐ Department of Experimental, Diagnostic and Specialty Medicine (DIMES) Alma Mater Studiorum University of Bologna Bologna Italy
20. Department of Dermatology University Medical Center Utrecht and Utrecht University Utrecht The Netherlands
21. Department of Dermatology University Hospital of Münster Münster Germany