1. Department of Hematology, Jagiellonian University Medical College, Cracow, Poland
2. Department of Hematology, Oncology and Internal Medicine, Warsaw Medical University, Warsaw, Poland
3. Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
4. Department of Internal Medicine, Hematology and Oncology, University Hospital, Brno, Czech Republic
5. Department of Hematology, Blood Neoplasms and Bone Marrow Transplantation, Wroclaw Medical University, Wroclaw, Poland
6. Medical University of Lublin, Lublin Poland
7. Complejo Asistencial de Avila, Avila, Spain
8. Division of Hematology/Oncology, Department of Medicine, Medical College of Wisconsin, Milwaukee, WI, USA
9. Hematology Unit of Cosenza, Italy
10. Department of Hematology and Stem Cell Transplantation, South-Pest Central Hospital, National Institute of Hematology and Infectology, Budapest, Hungary;
11. 3rd Department of Internal Medicine, Semmelweis University, Budapest, Hungary
12. Division of Hematology and Medical Oncology, Queen Mary Hospital, Hong Kong, China
13. Washington University School of Medicine, St. Louis, MS, USA
14. Department of Internal Medicine, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
15. Department of Hematology, Regional Specialistic Hospital, Cracow, Poland
16. Department of Oncology and Haematology, Central Clinical Hospital of the Ministry of the Interior, Warsaw, Poland
17. John Theurer Cancer Center, Hackensack University Medical Center, Hackensack, NJ, USA
18. Maria Sklodowska-Curie National Research Institute of Oncology, Warsaw, Poland
19. School of Medicine, Emory University, Atlanta, GA, USA