1. Department of Trauma and Orthopaedic Surgery, Upper Silesian Children’s Health Centre, Katowice, Poland
2. Department of Trauma and Orthopedic Surgery, ZSM Hospital, Chorzów, Poland
3. Faculty of Science and Technology, Institute of Biomedical Engineering, University of Silesia in Katowice, Katowice, Poland
4. Department of Anaesthesiology and Intensive Care, Upper Silesian Child Health Centre, Faculty of Medical Sciences in Katowice, Medical University of Silesia, Katowice, Poland