1. Department of Nursing Science, Faculty of Health Sciences, University of Eastern Finland and The Hospital District of South Ostrobothnia, P.O. Box 1627, 70211 Kuopio, Finland
2. Department of Nursing Science, Faculty of Health Sciences, University of Eastern Finland, 70211 Kuopio, Finland
3. Department of Nursing Science, Faculty of Health Sciences, University of Eastern Finland and Social and Health Care Services, 70211 Kuopio, Finland