[1] Charles Univ, Fac Med, Dept Anesthesiol & Intens Care Med, Hradec Kralove, Czech Republic
[2] Masaryks Hosp, Dept Anesthesiol & Intens Care Med, Usti Nad Labem, Czech Republic
[3] Charles Univ, Fac Med, Dept Internal Med, Plzen, Czech Republic
[4] Klaudians Hosp, Dept Anesthesiol & Intens Care Med, Mlada Boleslav, Czech Republic