1 Department of Clinical Medical Science II, Faculty of Health Studies, University of Rijeka, Rijeka, Croatia. alan.sustic@uniri.hr.
2 Department of Anesthesiology, Reanimatology, Intensive Care and Emergency Medicine, Faculty of Medicine, University of Rijeka, Br. Branchetta 20, 51 000, Rijeka, Croatia. alan.sustic@uniri.hr.
3 Department of Anesthesiology, Reanimatology, Intensive Care and Emergency Medicine, Faculty of Medicine, University of Rijeka, Br. Branchetta 20, 51 000, Rijeka, Croatia.
4 Department of Anaesthesiology and Intensive Care, Central Clinical Hospital of the Ministry of Interior and Administration, Warsaw, Poland.
5 University Clinic of Respiratory and Allergic Diseases Golnik, Golnik, Slovenia.
6 Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia.
7 Cantonal Hospital Dr. "Safet Mujić", Mostar, Bosnia and Herzegovina.
8 Department of Intensive Internal Medicine, General Hospital Celje, Celje, Slovenia.