1. Institute of Cardiology; Jagiellonian University Medical College, and John Paul II Hospital; Krakow Poland
2. Department of Hematology, Blood Neoplasms and Bone Marrow Transplantation; Wrocław Medical University; Wroclaw Poland
3. Department of Hematology and Bone Marrow Transplantation; Silesian Medical University; Katowice Poland
4. 1st Department of Hematology; City Hospital; Opole Poland
5. Department of Hematology; Medical University of Lublin; Lublin Poland