1. Faculty of Biology/Biology Didcactics (OZHB), Bielefeld University, 33615 Bielefeld, Germany
2. Department of Anaesthesiology and Intensive Care Medicine, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50937 Cologne, Germany
3. German Resuscitation Council, 89070 Ulm, Germany
4. FOM University of Applied Sciences, 50678 Cologne, Germany
5. Clinic for Anaesthesiology and Intensive Care Medicine, Franziskus Hospital Bielefeld, 33615 Bielefeld, Germany