1. Metabolic Signal Research Center, Institute for Molecular and Cellular Regulation, Gunma University, Maebashi, Gunma, Japan
2. Department of Metabolism & Endocrinology, Juntendo University Graduate School of Medicine, Tokyo, Japan
3. Division of Diabetes, Endocrinology and Clinical Immunology Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
4. Maebashi Norte Hospital, Maebashi, Gunma, Japan
5. Takarazuka City Hospital, Takarazuka, Hyogo, Japan