1. Department of Anaesthesiology, Intensive Care and Pain Management University Medical Centre Maribor Maribor Slovenia
2. Faculty of Medicine University of Maribor Maribor Slovenia
3. Institute of Anesthesiology and Intensive Care, Salemspital, Hirslanden Medical Group Bern Switzerland
4. Institute for Medical Education University of Bern Bern Switzerland
5. Department of Anesthesiology and Peri‐operative Medicine University of Texas MD Anderson Cancer Center Houston TX USA