1. Institute of Physics in Opava, Silesian University in Opava, Bezručovo Náměstí 1150/13, 746 01 Opava, Czech Republic
2. Department of Applied Mechanics, Faculty of Mechanical Engineering, VSB—Technical University of Ostrava, 17. Listopadu 2172/15, 708 00 Ostrava, Czech Republic
3. Institute of Emergency Medicine, Faculty of Medicine, University of Ostrava, Syllabova 19, 703 00 Ostrava-Vítkovice, Czech Republic