1. Institute of Mountain Emergency Medicine, Eurac Research, Bolzano, Italy.
2. Emergency Medical Services (COVID-1 Intermediate Care Unit), Bolzano Hospital, Bolzano, Italy.
3. Department of Anesthesia and Intensive Care, “F. Tappeiner” Hospital, Merano, Italy.
4. Emergency Medical Services 112, Health Care System Alto Adige, Bolzano, Italy.
5. Department of Anesthesiology and Intensive Care Medicine, Medical University Innsbruck, Innsbruck, Austria.