1. Babak Myeloma Group; Department of Pathological Physiology; Faculty of Medicine; Masaryk University; Brno Czech Republic
2. Department of Haemato-oncology; University Hospital Ostrava; Ostrava Czech Republic
3. Department of Clinical Haematology; University Hospital Brno; Brno Czech Republic
4. Faculty of Medicine; University of Ostrava; Ostrava Czech Republic