1. Section of Paediatric Neurosurgery, Department of Neurosurgery University of Tuebingen Tuebingen Germany
2. Paediatric Intensive Care Unit University Children's Hospital of Tuebingen Tuebingen Germany
3. Department of Anaesthesiology and Intensive Care Medicine, University Hospital Tübingen Eberhard‐Karls‐University Tuebingen Tuebingen Germany
4. Department of Thoracic and Cardiovascular Surgery University of Tuebingen Tuebingen Germany