1. Department of Hematology Democritus University of Thrace Medical School Alexandroupolis Greece
2. First Department of Internal Medicine National and Kapodistrian University of Athens Athens Greece
3. Second Department of Internal Medicine, Hematology Unit Attikon University General Hospital Athens Greece
4. Department of Clinical Hematology G. Gennimatas Hospital Athens Greece
5. Department of Hematology, Laikon General Hospital National and Kapodistrian University of Athens Athens Greece
6. Department of Hematology University Hospital of Ioannina Ioannina Greece
7. Department of Hematology General Hospital of Patras “Agios Andreas” Patras Greece
8. Department of Hematology University General Hospital of Heraklion Heraklion Greece
9. First Propaedeutic Department of Internal Medicine National and Kapodistrian University of Athens Athens Greece
10. Department of Hematology “Metaxa” Piraeus Cancer Hospital Piraeus Greece
11. Department of Hematology Aristotle University of Thessaloniki, AHEPA Hospital Thessaloniki Greece
12. Department of Internal Medicine University Hospital of Patras Rio Greece