1 From the Department of Anaesthesiology and Pain Medicine, Maastricht University Medical Centre, Maastricht, the Netherlands (MdK, DdK-dB), Department of Anaesthesia and Intensive Care, Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden (MSC), Department of Anaesthesiology and Peri-operative Medicine, Ghent University Hospital - Ghent University, Ghent, Belgium (SDH), European Society of Anaesthesiology and Intensive Care, Brussels, Belgium (PH), Department of Anaesthesia, Critical Care and Peri-operative Medicine, CHRU de Nancy, Nancy, France (TF-B), Anaesthesiology Department, University Hospital Düsseldorf, Düsseldorf Germany (GL) and Division of Perioperative Medicine, intensive Care- and Emergency Medicine, University Medical Centre Utrecht, Utrecht, The Netherlands (WB).