1. Department of Nursing Science; University of Turku; Turku Finland
2. University Hospital and City of Turku; Welfare Division; Turku Finland
3. Department of Health Science; Kristianstad University; Kristianstad Sweden
4. Department of Mathematics and Statistics; University of Turku; Turku Finland
5. Faculty of Nursing; National and Kapodistrian University of Athens; Athens Greece
6. Department of Health Sciences and Skåne University Hospital; Lund University; Lund Sweden
7. Department of Nursing Studies; Cyprus University of Technology; Limassol Cyprus
8. University of Turku; Turku Finland