1. Department of Dermatology University Hospital of Ioannina Ioannina Greece
2. Department of Pathology, Faculty of Medicine, School of Health Sciences University of Ioannina Ioannina Greece
3. Department of Pathology University Hospital of Ioannina Ioannina Greece
4. Department of Medical Physics, Faculty of Medicine, School of Health Sciences University of Ioannina Ioannina Greece
5. Department of Dermatology Fachklinik Hornheide Münster Germany
6. Department of Skin and Venereal Diseases, Faculty of Medicine, School of Health Sciences University of Ioannina Ioannina Greece