Jochen Hinkelbein1, Robert Greif, Pierre Diemunsch, Peter Kranke. 1. From the Department of Anaesthesiology and Intensive Care Medicine, University Hospital of Cologne, Cologne, Germany (JH), Department of Anaesthesiology and Pain Therapy, Bern University Hospital, University of Bern, Bern, Switzerland (RG), Service d'Anesthésie-Réanimation Chirurgicale, Hôpitaux de Hautepierre, CHU de Hautepierre, Strasbourg, France (PD), Departments of Anaesthesia and Critical Care, University Hospitals of Würzburg, Würzburg, Germany (PK).