1. Department
of Diabetes, Endocrinology and Nutrition, Graduate School of Medicine, Kyoto University, 54 Shogoinkawahara-cho, Sakyo-ku, Kyoto 606-8507, Japan
2. Institute of Fruit Tree and Tea Science, NARO, 2-1 Fujimoto, Tsukuba, Ibaraki 305-8605, Japan
3. Laboratory
of Medical Physiology and Metabolism, Department of Biomedical Sciences,
College of Life Science, Ritsumeikan University, 1-1-1 Noji-higashi, Kusatsu, Shiga 525-8577, Japan
4. Department
of Endocrinology, Metabolism and Nephrology, Kochi Medical School, Kochi University, 185-1, Kohasu, Oko-cho, Nankoku, Kochi 783-8505, Japan