1. Division of Diabetes and Metabolism, Iwate Medical University School of Medicine, Morioka, Japan
2. Department of Metabolic Diseases, Center for Metabolic Diseases, Tohoku University Graduate School of Medicine, Sendai, Japan
3. Division of Gastroenterology and Hepatology, Iwate Medical University School of Medicine, Morioka, Japan
4. Department of Obstetrics and Gynecology, Iwate Medical University School of Medicine, Morioka, Japan
5. Division of Endocrinology, Department of Internal Medicine, Iwate Medical University School of Medicine, Morioka, Japan
6. Department of Diabetes, Morioka City Hospital, Morioka, Japan