1. The Japan Diabetes Society; Tokyo Japan
2. Tenri Hospital; Nara Japan
3. The National Center for Global Health and Medicine; Tokyo Japan
4. Division of Diabetes, Metabolism & Endocrinology; Department of Internal Medicine; Jikei University School of Medicine; Tokyo Japan
5. Department of Biostatistics and Clinical Epidemiology; Graduate School of Medicine and Pharmaceutical Sciences; University of Toyama; Toyama Japan
6. Jikei University School of Medicine; Tokyo Japan