1. Department of Endocrinology and Diabetes Yokohama City University Medical Center Yokohama Japan
2. Kaneshiro Medical Clinic Sagamihara Japan
3. Kanazawa Medical Clinic Yokohama Japan
4. Idogaya Kens Clinic Yokohama Japan
5. International University of Health and Welfare, Atami Hospital Atami Japan
6. Koiso Clinic Yokosuka Japan
7. Takahashi Medical Clinic Fujisawa Japan
8. Saiseikai Yokohama Nanbu Hospital Yokohama Japan
9. Department of Ophthalmology Yokohama City University Medical Center Yokohama Japan
10. Department of Endocrinology and Metabolism Yokohama City University School of Medicine Yokohama Japan