1. Department of Neurosurgery, Universitätsklinikum Ulm, Ulm, Germany,
2. Department of Pediatric Medicine, Clementine Hospital, Frankfurt am Main, Germany
3. Department of Traumatology and Neurotraumatology, Allgemeines Krankenhaus Celle, Celle, Germany
4. Department of Pediatric Medicine, Intensive Care Unit, Medizinische Hochschule Hannover, Hannover, Germany
5. Department of Neurosurgery, Universitätsklinikum Ulm, Ulm, Germany
6. Department of Neurosurgery, Medizinische Hochschule Hannover, Hannover, Germany