1. Unit of Health Sciences, Nursing Science, Faculty of Social Sciences, Tampere University, 33014 Tampere, Finland
2. Faculty of Nursing, Kyoto Tachibana University, Kyoto 607-8175, Japan
3. Unit of Health Sciences, Faculty of Social Sciences, Tampere University, Kalevantie 4, 33014 Tampere, Finland
4. Etelä-Pohjanmaa Welfare County, 60220 Seinäjoki, Finland