1. Research Unit of Nursing Science and Health Management University of Oulu Oulu Finland
2. Oulu University of Applied Sciences Oulu Finland
3. Oulu University Hospital Medical Research Center Oulu Oulu Finland
4. Oulu University Hospital Oulu Finland
5. Research Group of Surgery, Anesthesiology and Intensive Care Medicine University of Oulu and Medical Research Center (MRC), Oulu University Hospital Oulu Finland
6. Northern Ostrobothnia Hospital District Oulu Finland
7. Medical Research Centre Oulu Finland