1. Division of Medicine, University Hospital of Heraklion, Medical School of Crete
2. Hematology Unit, Third Department of Internal Medicine, Sotiria Hospital, Medical School of Athens
3. Hematology Unit, Venizelion Hospital of Heraklion, Crete
4. Departments of Hematology University Hospital of Heraklion, Medical School of Crete
5. Social Medicine of the University Hospital of Heraklion, Medical School of Crete
6. Department of Hematology of the University Hospital of Larisa, Medical School of Thessalia - Greece