1. Department of Nursing, St. Mary's College, Kurume, Fukuoka, Japan
2. Department of Nursing, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
3. Department of Human Development and Family Studies, Utah State University, Logan, UT, USA
4. Department of Human Development and Family Studies, The Pennsylvania State University, University Park, PA, USA
5. Tukushiminamigaoka Hospital, Fukuoka, Japan