[1] Reg Specialist Hosp, Dept Anaesthesiol & Intens Care, Olsztyn, Poland
[2] Univ Warmia & Mazury, Coll Med, Fac Med, Dept Anaesthesiol & Intens Care, Olsztyn, Poland
[3] Hosp Heilig Geist, Fritzlar, Germany
[4] Jan Kochanowski Univ, Coll Med, Kielce, Poland
[5] Hosp Minist Interior, Dept Internal Med, 51 Wojska Polskiego St, PL-25375 Kielce, Poland
[6] Independent Nonpubl Hlth Care Inst Zdrowie, Olsztyn, Poland
[7] Pro Med Hosp, Elk, Poland