1. Division of Food & Health Environmental Sciences, Faculty of Environmental and Symbiotic Sciences, Prefectural University of Kumamoto, Kumamoto 862-8502, Japan
2. Kumamoto General Hospital, Kumamoto 866-8660, Japan
3. Department of Medical Oncology & Diabetes, Saiseikai Kumamoto Hospital, Kumamoto 861-4193, Japan
4. Sekigami Clinic, Division of Medicine & Diabetes and Endocrine, Kumamoto 866-0824, Japan
5. Ueki Hospital, Kumamoto 861-0136, Japan
6. Kumamoto Rousai Hospital, Kumamoto 866-8533, Japan
7. Department of Metabolic Medicine, Faculty of Life Sciences, Kumamoto University, Kumamoto 860-8556, Japan
8. Yoshimura Clinic, Kumamoto 861-8039, Japan
9. Sakurado-ri Clinic, Kumamoto 860-0832, Japan
10. Kumamoto Chuo Hospital, Kumamoto 862-0962, Japan