1. School of Medicine; Keio University; Tokyo Japan
2. Graduate School of Economics; Keio University; Tokyo Japan
3. The Kinugasa Research Organization; Ritsumeikan University; Kyoto Japan
4. Faculty of Agriculture; Ryukoku University; Kyoto Japan
5. Department of Public Health; Shiga University of Medical Science; Otsu Japan
6. Faculty of Sociology; Ryukoku University; Otsu Japan
7. School of Medicine; Teikyo University; Tokyo Japan
8. Research Institute of Strategy for Prevention; Tokyo Japan