1. Department of Pathology; Western General Hospital and The University of Edinburgh; Edinburgh UK
2. Dermatohistologishes Labor; Offenbach am Main Germany
3. Department of Pathology; AZ Sint-Jan; Bruges Belgium
4. Department of Pathology; Queen Elizabeth University Hospital; Glasgow UK
5. Department of Pathology; Landeskrankenhaus Feldkirch; Feldkirch Austria
6. Department of Pathology; Brigham and Women's Hospital and Harvard University Medical School; Boston MA USA