1. Neuro-Intensive Care Unit, Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria.
2. Department of Anesthesiology and Critical Care Medicine, Medical University of Innsbruck, Innsbruck, Austria.
3. Institute of Mountain Emergency Medicine, European Academy (EURAC) Research, Bolzano, Italy.
4. Department of Neurosurgery, Medical University of Innsbruck, Innsbruck, Austria.
5. Department of Anaesthesiology and Intensive Care Medicine, Hospital of the Brothers of St. John of God Salzburg, Salzburg, Austria.