1. Medical Intensive Care Unit, University Clinical Centre of the Republic of Srpska, Banja Luka, Bosnia and Herzegovina
2. Medical Faculty, University of Banja Luka, Banja Luka, Bosnia and Herzegovina
3. Neurological Intensive Care Unit, University Clinical Centre of Ljubljana, Ljubljana, Slovenia
4. Infectology Intensive Care Unit, University Clinical Centre of Ljubljana, Ljubljana, Slovenija
5. Surgical Intensive Care Unit, University Clinical Centre of Ljubljana, Ljubljana, Slovenija
6. Medical Intensive Care Unit, University Clinical Centre of Ljubljana, Ljubljana, Slovenija