1. Department of Endocrinology and Diabetes, Yokohama City University Medical Center, Yokohama, Japan
2. Department of Pathology, College of Environmental Health, Azabu University, Sagamihara, Japan
3. The Department of Pathology, Wakayama Medical University, Wakayama, Japan
4. Kannaiekimae clinic, Yokohama, Japan
5. Department of Ophthalmology, Yokohama City University Medical Center, Yokohama, Japan
6. Department of Endocrinology and Metabolism, Yokohama City University School of Medicine, Yokohama, Japan