1. Department of Diabetes and Endocrinology Saiseikai Yokohamashi Nanbu Hospital Yokohama Japan
2. Department of Endocrinology and Metabolism Graduate School of Medicine Yokohama City University Yokohama Japan
3. Laboratory and Diabetes and Metabolic Disorders Institute for Molecular and Cellular Regulation Gunma University Maebashi Japan
4. Department of Endocrinology and Metabolism Odawara Municipal Hospital Odawara Japan
5. HEC Science Clinic Yokohama Japan