1. Department of Anesthesiology and Intensive Care Medicine, Park-Klinik-Weissensee, 13086 Berlin, Schönstrasse 80, Germany.
2. Department of Anesthesiology, Intensive Care Medicine, Emergency Medicine, Combat Search and Rescue German Army, Air Force and Navy Hospital Bundeswehrkrankenhaus Berlin (BWK Berlin), Scharnhorststrasse 13, 10115 Berlin, Germany.
3. Department of Anesthesiology, Intensive Care Medicine, Emergency Medicine and Pain Therapy, Asklepios Klinikum Harburg, Eißendorfer Pferdeweg 52, 21075 Hamburg, Germany.