1. Graduate School of Health Sciences, Gunma University, Maebashi, Japan
2. Center for Food Science and Wellness, Gunma University, Maebashi, Japan
3. Interfaculty Initiative in Public Health, Gunma University, Maebashi, Japan
4. Gunma University of Health and Welfare, Maebashi, Japan
5. Japan Health Insurance Association, Gunma Branch, Maebashi, Japan
6. Faculty of Informatics, Gunma University, Maebashi, Japan
7. School of Nursing, Dokkyo Medical University, Shimotsuga, Japan