1. Department of Emergency Medicine and Pre-Hospital Services; St. Olav's University Hospital; Trondheim Norway
2. Department of Circulation and Medical Imaging; Faculty of medicine; NTNU; Norwegian University of Science and Technology; Trondheim Norway
3. Department of Anaesthesiology; Division of Emergencies and Critical Care; Oslo University Hospital; Oslo Norway
4. Department of Public Health; Faculty of medicine; NTNU; Norwegian University of Science and Technology; Trondheim Norway
5. Department of Anaesthesiology and Intensive Care Medicine; St. Olav's University Hospital; Trondheim Norway