1. Department of Pathology, Faculty of Medicine, School of Health Sciences, University of Ioannina, Ioannina, Greece
2. Department of Hematopathology, Evangelismos General Hospital, Athens, Greece
3. Department of Hematology, Faculty of Medicine, School of Health Sciences, University of Ioannina, Ioannina, Greece
4. Department of Anatomy-Histology-Embryology, Faculty of Medicine, School of Health Sciences, University of Ioannina, Ioannina, Greece