1. Austrian Mountain Rescue Service, International Commission for Mountain Emergency Medicine, Roethis, Austria.
2. International Commission for Mountain Emergency Medicine.
3. Department of Experimental Anesthesiology, Innsbruck Medical University, Innsbruck, Austria.
4. Mountain Rescue Council England and Wales, Penrith, Cumbria, England.
5. Canadian Ski Patrol.
6. Mountain Rescue Service provided by the South Tyrolean Alpine Association, International Commission for Mountain Emergency Medicine, Bruneck, Italy.
7. Department of Anesthesiology and Critical Care Medicine, Innsbruck Medical University, Innsbruck, Austria.