1. Department of Thoracic and Occupational Medicine; Trondheim University Hospital; Trondheim Norway
2. Institute of Circulation and Medical Imaging; Norwegian University of Science and Technology (NTNU); Trondheim Norway
3. Department of Research; Haugesund Hospital; Helse Fonna; Haugesund Norway
4. Department of Research and Development; Division of Emergencies and Critical Care; Oslo University Hospital; Oslo Norway
5. Department of Nursing Science; University of Oslo; Oslo Norway