1. Department of General, Gastroenterology and Oncologic Surgery, University Clinical Center of the Medical University of Warsaw, Poland
2. Department of Cardiovascular Surgery, University Clinical Center of the Medical University of Warsaw, Poland
3. Department of Clinical Radiology, University Clinical Center of the Medical University of Warsaw, Poland
4. Department of General, Gastroenterology and Oncologic Surgery, University Clinical Center of the Medical University of Warsaw
5. Department of General, Vascular and Transplant Surgery, University Clinical Center of the Medical University of Warsaw, Poland