1. Department of Integrative Physiology, Gunma University Graduate School of Medicine, Gunma 371-8511, Japan
2. Laboratory of Epigenetics and Metabolism, Institute of Molecular and Cellular Regulations, Gunma 371-8512, Japan
3. Department of Clinical Pharmacology and Therapeutics, Gunma University Graduate School of Medicine, Gunma 371-8511, Japan
4. Department of Bioscience and Laboratory Medicine, Hirosaki University Graduate School of Health Sciences, Aomori 036-8564, Japan
5. Department of Nutrition, Takasaki University of Health and Welfare, Gunma 370-0033, Japan