1. Department of Dermatology Birmingham Children's Hospital Steelhouse Lane Birmingham B4 6NH U.K
2. Department of Medical Genetics Institute of Mother and Child Warsaw Poland
3. St John's Institute of Dermatology Guy's and St Thomas' NHS Foundation Trust London U.K
4. East of Scotland Regional Genetics Service Ninewells Hospital Dundee U.K
5. GSTS Pathology St Thomas' Hospital London U.K
6. St John's Institute of Dermatology King's College London (Guy's Campus) London U.K
7. Great Ormond Street Hospital for Children NHS Foundation Trust London U.K
8. West Midlands Clinical Genetics Service Birmingham Women's Hospital Birmingham U.K
9. Department of Dermatology and Immunodermatology Medical University of Warsaw Warsaw Poland
10. Department of Dermatology University Medical Center Freiburg Freiburg Germany