1. Department of General, Vascular Surgery, Angiology and Phlebology Faculty of Katowice Medical University of Silesia, Faculty of Medicine in Katowice, Medical University of Silesia, Poniatowskiego Str 15, 40-055 Katowice, Poland
2. Department of Anaesthesiology and Intensive Care, Upper-Silesian Medical Centre of the Silesian Medical University, Ziołowa 45, 40-635 Katowice, Poland
3. Physiotherapy Unit, Department of Physiotherapy, Faculty of Health Sciences, Medical University of Silesia, Poniatowskiego Str 15, 40-055 Katowice, Poland