1. Department of Anesthesiology and Intensive Care Medicine, Rheinische Friedrich-Wilhelms-University, University Medical Center, Bonn, Germany
2. Emergency Department, Rheinische Friedrich-Wilhelms-University, University Medical Center, Bonn, Germany
3. Pediatric Heart Centre, Justus-Liebig University, Giessen, Germany
4. Department of Cardiac Surgery, Rheinische Friedrich-Wilhelms-University, University Medical Center, Bonn, Germany
5. Department of Anesthesiology, Klinikum Dortmund, Dortmund, Germany