1. Department of Anaesthesiology and Intensive Therapy Regional Hospital Sosnowiec Poland
2. Department of Emergency Medicine, School of Medical Sciences in Zabrze Medical University of Silesia Katowice Poland
3. Students Scientific Society by Department of Emergency Medicine, School of Medical Sciences in Zabrze Medical University of Silesia Katowice Poland
4. Department of Epidemiology and Biostatistics, School of Public Health in Bytom Medical University of Silesia Katowice Poland
5. Department of Histology, Cytophysiology, and Embryology, Faculty of Medicine in Zabrze The University of Technology in Katowice Katowice Poland