1. Division of Diabetes, Department of Internal Medicine, Aichi Medical University School of Medicine, Nagakute, Japan
2. Division of Endocrinology and Metabolism, Department of Internal Medicine, Fujita Health University School of Medicine, Toyoake, Aichi, Japan
3. Department of Internal Medicine, Aichi Gakuin University School of Dentistry, Nagoya, Japan
4. Department of Medicine, Aichi Gakuin University School of Pharmacy, Nagoya, Japan