1. Research Unit of Nursing Science and Health Management; University of Oulu; Oulu Finland
2. Division of Intensive Care; Department of Anaesthesiology; Medical Research Centre; Research Unit of Surgery, Anaesthesia and Intensive Care; Oulu University Hospital; University of Oulu; Oulu Finland
3. Research Unit of Nursing Science and Health Management; Medical Research Centre; Oulu University Hospital; University of Oulu; Oulu Finland