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