1. Department of Nursing Jessenius Faculty of Medicine in Martin Comenius University in Bratislava Martin Slovak Republic
2. Department of Nursing Science University of Turku Turku Finland
3. Welfare Division Turku University Hospital Turku Finland
4. Department of Mathematics and Statistics University of Turku Turku Finland
5. Department of Nursing Faculty of Health Sciences Palacký University Olomouc Czech Republic