1 Department of Anesthesiology and Intensive Care Medicine, Innsbruck University Hospital, Medical University Innsbruck, Anichstrasse 35, A-6020 Innsbruck, Austria; Institute of Mountain Emergency Medicine, EURAC Research, Bolzano, Italy. Electronic address: bernd.wallner@i-med.ac.at.
2 Institute of Mountain Emergency Medicine, EURAC Research, Bolzano, Italy.
3 Birbeck Medical Group, Penrith, United Kingdom.
4 Department of Anesthesiology and Intensive Care Medicine, Hospitallers Brothers Hospital, Teaching Hospital of the Paracelsus Medical University, Salzburg, Austria.