1. Department of Medical Genetics, Haartman Institute, University of Helsinki, Finland
2. Department of Dermatology, Helsinki University Central Hospital, Helsinki, Finland
3. Department of Pathology, University of Oulu, Finland
4. Department of Pathology, Haartman Institute, University of Helsinki, Finland
5. Department of Molecular Microbiology, Washington University School of Medicine, St Louis, Missouri
6. J.C. Self Research Institute of Human Genetics, Greenwood Genetic Center, Greenwood, South Carolina
7. Institute of Biotechnology, University of Helsinki, Finland