1. Hematology Unit First Department of Internal Medicine Laikon General HospitalNational and Kapodistrian University of Athens AthensGreece
2. Department of Internal Medicine University Hospital of Patras RioGreece
3. Haematology Division Second Department of Internal Medicine Attikon General HospitalNational and Kapodistrian University of Athens AthensGreece
4. Department of Hematology University Hospital of Alexandroupolis AlexandroupoliGreece
5. Department of Clinical Hematology 'G. Gennimatas' District General Hospital AthensGreece
6. Haematology Laboratory School of Medicine University of Crete HeraklionGreece
7. Hematology Department General Hospital of Thessaloniki “George Papanikolaou” Pilea ChortiatisGreece
8. Department of Hematology Larissa University HospitalUniversity of Thessalia LarissaGreece
9. Department of Hematology St Andrew' General Hospital PatrasGreece
10. Department of Haematology University of Ioannina IoanninaGreece
11. Hematology Department University General Hospital of Thessaloniki AHEPA ThessalonikiGreece
12. Department of Hematology Metaxa Anticancer Hospital PiraeusGreece
13. First Propedeutic Department of Internal Medicine School of Medicine National and Kapodistrian University of Athens Athens Greece