1. II Department of Anesthesiology and Intensive Care, Medical University of Warsaw, Warsaw, Poland
2. Liver and Internal Medicine Unit, Medical University of Warsaw, Warsaw, Poland
3. Warsaw School of Economics, Warsaw, Poland
4. Department of Nephrology, Dialysis and Internal Medicine, Medical University of Warsaw, Warsaw, Poland
5. Department of General, Transplant and Liver Surgery, Medical University of Warsaw, Warsaw, Poland