1. Graduate School of Comprehensive Human Science, Program in Nursing Science, University of Tsukuba, 1–1–1 Tennodai, Tsukuba, Ibaraki, 305–8575, Japan
2. Faculty of Education, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka-shi, Shizuoka, 422–8529, Japan
3. Faculty of Medicine, Division on Health Innovation and Nursing, Department of Public Health Nursing, University of Tsukuba, 1–1–1 Tennodai, Tsukuba-shi, Ibaraki, 305–8575, Japan