1. Department of General and Vascular Surgery, University of Pecs Medical School, Pecs, Hungary
2. Department of Surgical Research and Techniques, University of Pecs Medical School, Pecs, Hungary
3. Department of Anaesthesiology and Intensive Care, Baranya County Hospital, Pecs, Hungary
4. Department of Anaesthesiology and Intensive Care, University of Pecs Medical School, Pecs, Hungary