Charles University, Charles University, Charles University, Charles University, University Hospital Hradec Kralove, Charles University, Charles University, affiliation not provided to SSRN, University of Defence in Brno, University of Defense, University Hospital Hradec Kralove, University Hospital Hradec Kralove, University Hospital Hradec Kralove, University of Defence, Trebesska - Faculty of Military Health Sciences, University Hospital Hradec Kralove and Charles University