1. Laboratory of Human Molecular Genetics; de Duve Institute, Université catholique de Louvain; Brussels Belgium
2. Center for Human Genetics; Cliniques universitaires St Luc; Université catholique de Louvain; Brussels Belgium
3. Vascular Anomalies Centre, Division of Plastic Surgery; Cliniques universitaires St Luc; Brussels Belgium
4. Department of Dermatology; Hospital de Pediatria Prof. Dr. J.P. Garrahan; Buenos Aires Argentina
5. Department of Medical Imaging; Sainte-Justine Mother-Child University Hospital; Montreal Canada
6. Department of Medical Imaging, Cliniques universitaires Saint-Luc; Université catholique de Louvain; Brussels Belgium
7. Victorian Clinical Genetics Services, Murdoch Childrens Research Institute; Royal Children's Hospital; Parkville Victoria 3052 Australia
8. Dermatology Clinic; Our Lady's Children's Hospital Crumlin; Dublin Ireland
9. Department of Dermatology; Hospital de la Santa Creu I Sant Pau; Barcelona Spain
10. Department of Dermatology, Université de Caen Basse Normandie; CHU Caen; Caen France
11. Department of Pediatric Dermatology; Great Ormond Street Hospital for Children; London United Kingdom
12. Department of Dermatology; Son Espases University Hospital; Palma de Mallorca Spain
13. Department of Clinical Genetics; The Children's Hospital at Westmead; Westmead Sydney, New South Wales 2145 Australia
14. Department of Pediatrics and Dermatology at the University of California at San Diego and Rady Children's Hospital; San Diego California
15. Department of Radiology; Roosevelt Hospital; New York New York
16. Vascular Birthmark Institute of New York; Roosevelt Hospital; New York New York
17. Department of Pediatrics; Federico II University of Naples; Naples Italy
18. Department of Dermatology; Hospital Sant Joan de Deu; Barcelona Spain
19. Medical Genetics Department; Hôpital Erasme, Université Libre de Bruxelles; Brussels Belgium
20. Departments of Pediatrics and Medicine; Columbia University; New York New York
21. Morgan Stanley Children's Hospital of New York; New York New York
22. Clinical Genetics Service; Nottingham University Hospital; Nottingham United Kingdom
23. Kaiser Permanente Medical Center; Honolulu Hawaii
24. Vascular Birthmarks Program; Children's Hospital at Westmead; Westmead New South Wales 2145 Australia
25. Clinical and Metabolic Genetics; The Hospital for Sick Children; Toronto Canada
26. Division of Pediatric Dermatology; Children's Memorial Hospital; Chicago Illinois
27. Pediatric Dermatology of North Texas; Grapevine Texas
28. Unit of Dermatology; Hospital San Jorge; Huesca Spain
29. West of Scotland Clinical Genetics Service; Laboratory Medicine Building, Southern General Hospital; Glasgow G51 4TF Scotland United Kingdom
30. Unit of Dermatology; Hospital del Niño Jesús; Tucumán Argentina
31. Centre de Référence Maladies rares de la peau; CHU de Bordeaux; Bordeaux France
32. Department of Medical Genetics; CHU Bordeaux; Bordeaux France
33. Pediatric Dermatology; St. Louis Children's Hospital; St. Louis Missouri
34. Genética Molecular; Hospital Sant Joan de Déu; Barcelona Spain
35. Service de Dermatologie, Centre de Référence des Maladies rares de la peau; Hôpital Larrey; Toulouse France
36. Departement of Dermatology; Children's University Hospital; Dublin 1 Ireland
37. Département de Dermatologie, Hôpital Saint-Éloi; CHRU de Montpellier; Montpellier France
38. Departments of Medicine and Genetics; Perelman School of Medicine at the University of Pennsylvania; Philadelphia Pennsylvania
39. Dermatolgie; Faculté de Médecine d'Alger; Alger Algeria
40. Massachusetts Eye and Ear Infirmary; Harvard Medical School; Boston Massachusetts
41. Department of Paediatric Dermatology; Sydney Children's Hospital: School of Women's and Children's Health University of New South Wales; Sydney New South Wales Australia
42. Department of Plastic and Oral Surgery; Children's Hospital, Harvard Medical School; Boston Massachusetts