1. Nursing and Health Administration Science Research Unit, Oulu University, Oulu, Finland
2. Nursing and Health Administration Science Research Unit, University of Oulu, Oulu, Finland
3. Clinical Nursing Science, Oulu University Hospital, Children and Women, Oulu, Finland
4. Medical Informatics and Statistics Research Group, University of Oulu, Aapistie, Oulu, Finland
5. Finnish Institute of Occupational Health, Aapistie, Oulu, Finland
6. Research Unit of Biomedicine, University of Oulu, Oulu, Finland
7. Arctic Health, Faculty of Medicine and Thule Institute, University of Oulu, Aapistie, Oulu, Finland