1. Second Department of Internal Medicine, Propaedeutic, Hematology Unit; National and Kapodistrian University of Athens, Medical School, University General Hospital ‘Attikon’; Haidari; Greece
2. Department of Haematology; University of Athens, Medical School, ‘Laikon’ General Hospital; Athens; Greece
3. Department of Pathology; University of Athens, Medical School, ‘Laikon’ General Hospital; Athens; Greece
4. Hematology Clinic; Theagenion Cancer Hospital; Thessaloniki; Greece
5. Third Department of Internal Medicine; National and Kapodistrian University of Athens, Medical School, ‘Sotiria’ Hospital; Athens; Greece
6. Department of Haematology; Democritus University of Thrace; Alexandroupolis; Greece
7. Department of Haematology; University of Crete; Heraclion; Greece
8. Department of Therapeutics; National and Kapodistrian University of Athens, Medical School, ‘Alexandra’ Hospital; Athens; Greece
9. Department of Haematology; Athens Medical Center, Psychikon Branch; Athens; Greece