1. Transplantation Institute, Department of Immunology, Transplantology and Internal Diseases, Medical University of Warsaw, 59 Nowogrodzka Street, 02-006 Warsaw, Poland
2. Department of Nephrological Nursing, Medical University of Warsaw, 8 Oczki Street, 02-007 Warsaw, Poland
3. Transplantation Institute, Department of General and Transplant Surgery, Medical University of Warsaw, 59 Nowogrodzka Street, 02-006 Warsaw, Poland