1. Department of Cancer Genetics with Cytogenetic Laboratory, Medical University of Lublin, 20-059 Lublin, Poland
2. Department of Psychology, Medical University of Lublin, 20-059 Lublin, Poland
3. Chair and Department of Hematooncology and Bone Marrow Transplantation, Medical University of Lublin, 20-059 Lublin, Poland
4. Institute of Biology, Jan Kochanowski University, 25-406 Kielce, Poland