1. Department of Anaesthesiology and Critical Care Medicine; AUVA Trauma Centre Salzburg; Salzburg Austria
2. Paracelsus Medical University Salzburg; Salzburg Austria
3. Department of Anaesthesiology and Critical Care Medicine; Innsbruck Medical University; Innsbruck Austria
4. Department of Neurology; Innsbruck Medical University; Innsbruck Austria
5. Department of Anaesthesiology; Academic Medical Centre; University of Amsterdam; Amsterdam The Netherlands