1. School of Nursing, University of Shizuoka, Yada 52-1, Suruga-ku, Shizuoka 422-8526, Japan
2. Graduate School of Global Environmental Studies, Kyoto University, Kyoto Daigaku-Katsura, Nishikyo-ku, Kyoto 615-8540, Japan
3. Department of Urban Management, Graduate School of Engineering, Kyoto University, Kyoto Daigaku-Katsura, Nishikyo-ku, Kyoto 615-8540, Japan