1. Department of Hematology, University Medical Center Ljubljana, Ljubljana, Slovenia
2. Medical Faculty, University of Ljubljana, Ljubljana, Slovenia
3. Department of Hematology and Blood Transfusion, University Hospital St. Cyril and Metod, Bratislava, Slovakia
4. Clinic of Hematology, University Multiprofile Hospital for Active Treatment “Dr. Georgi Stranski” EAD, Pleven, Bulgaria
5. Department of Biostatistics, Quartesian, Kharkov, Ukraine
6. Medical Affairs, Amgen (Europe North East), Rotkreuz, Switzerland
7. Medical Affairs, Amgen (Europe) GmbH, Rotkreuz, Switzerland
8. Clinic of Hematology, Specialized Hospital for Active Treatment of Hematology Diseases AD, Sofia, Bulgaria