1. Department of General Surgery and Transplantology, Medical University of Warsaw, Warsaw, Poland
2. Department of Surgery, Faculty of Medical Sciences, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland and Department of Immunology, Transplantology and Internal Diseases, Medical University of Warsaw, Warsaw, Poland
3. Department of Surgical and Transplantation Nursing, Medical University of Warsaw, Warsaw, Poland