1. Kenshokai Gakuen College for Health and Welfare, Tokushima, Japan
2. Kenshokai Group, Nursing Home “Center Villege” for aged persons, Tokushima, Japan
3. Department of Nutrition and Metabolism, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
4. Department of Clinical Nutrition and Food Management, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan