1. Greek Myeloma Study Group; Athens Greece
2. Department of Hematology; Theagenio Cancer Hospital; Thessaloniki Greece
3. Department of Clinical Therapeutics; National and Kapodistrian University of Athens, School of Medicine; Athens Greece
4. Division of Hematology; Department of Internal Medicine; University of Patras; Patras Greece
5. Department of Hematology; St Savvas Oncology Hospital; Athens Greece
6. Hematology Department-Bone Marrow Transplantation Unit; George Papanicolaou Hospital; Thessaloniki Greece
7. Hematology Section and Laboratory; First Department of Propaedeutic Medicine; School of Medicine, National and Kapodistrian University of Athens; Athens Greece
8. Department of Hematology; Metaxa Cancer Hospital; Piraeus Greece
9. Department of Hematology and Bone Marrow Transplantation Unit; Evangelismos Hospital; Athens Greece
10. Department of Hematology; Democritus University of Thrace Medical School; Alexandroupolis Greece
11. Department of Hematology; University of Thessaly, School of Medicine; Larisa Greece
12. First Department of Internal Medicine; Hematology Unit, Laikon General Hospital, National and Kapodistrian University of Athens; Athens Greece
13. Department of Hematology; Amalia Fleming General Hospital; Athens Greece
14. Department of Hematology; 251 General Air Force Hospital; Athens Greece