1. Mo i Rana Hospital; Helgeland Hospital Trust; Mo i Rana Norway
2. Department of Anaesthesiology and Intensive Care; University Hospital of North Norway; Tromsø Norway
3. Anaesthesia and Critical Care Research Group; Faculty of Health Sciences; University of Tromsø; Tromsø Norway
4. Lynghaug School; Bergen Norway
5. Faculty of Education; Western Norway University of Applied Sciences; Bergen Norway
6. Ortun School; Bergen Norway