1. Department Anaesthesiology; Universitetssykehuset i Nord-Norge; Tromsø Norway
2. Department of Anaesthesiology; The Abdominal Centre; Rigshospitalet; Copenhagen Denmark
3. Medical Health Care Services; Roskilde Festival; Roskilde Denmark
4. The Prehospital Emergency Medical Center; The Zealand Region; Slagelse Denmark
5. Department of Anaesthesiology; Naestved Sygehus; Naestved Denmark