1. Department of Hematology; Jagiellonian University Medical College; Cracow Poland
2. Dana-Farber Cancer Institute; Harvard Medical School; Boston Massachusetts
3. John Theurer Cancer Center; Hackensack University Medical Center; Jersey
4. Rutgers New Jersey Medical School; Newark New Jersey
5. Tel Aviv Medical Center; Israel
6. Department of Hematology, Oncology and Internal Diseases; Warsaw Medical University; Warsaw Poland
7. Institute of Hematology and Transfusion Medicine; Warsaw Poland
8. Centre of Postgraduate Medical Education; Warsaw Poland
9. Hematology Unit, Department of Onco-Hematology; A.O. of Cosenza; Cosenza Italy
10. Department of Hematology and Stem Cell Transplantation; South-Pest Central Hospital, National Instistute of Hematology and Infectology; Budapest Hungary
11. Dana-Farber Cancer Institute at St Elisabeth's; Boston Massachusetts
12. Division of Hematology; Mayo Clinic; Rochester Minnesota