1. Department of Haematology, Oncology and Internal Diseases; Warsaw Medical University; Warsaw Poland
2. Department of Epidemiology and Biostatistics; Warsaw Medical University; Warsaw Poland
3. Department and Clinic of Haematology, Blood Neoplasms and Bone Marrow Transplantation; Wroclaw Medical University; Warsaw Poland
4. Department of Haematology; Jagiellonian University; Kraków Poland
5. Department of Haematology; Nicolaus Copernicus Specialist Municipal Hospital; Toruń Poland
6. Department of Nephrology and Internal Diseases; Medical University of Warsaw; Warsaw Poland
7. Department of Nephrology and Transplantation Medicine; Wroclaw Medical University; Wrocław Poland