1. Institute of Anaesthesiology and Intensive Care, Salemspital, Hirslanden Medical Group
2. Institute for Medical Education, University of Bern, Bern, Switzerland
3. CINTESIS - Center for Health Technology and Services Research, Faculty of Medicine, Porto, Portugal
4. Institute of Anaesthesiology and Intensive Care, Spital Limmattal, Schlieren, Switzerland
5. Department of Anaesthesia and Intensive Care, Hospital of Nykøbing Falster, University of Southern Denmark, Odense, Denmark