1. Division of Diabetes and Endocrinology Department of Internal Medicine Kobe University Graduate School of Medicine Kobe Hyogo Japan
2. Division of Diabetes and Metabolism Shinko Hospital Kobe Hyogo Japan
3. Division of Internal Medicine Nishiwaki Municipal Hospital Nishiwaki Hyogo Japan
4. Division of Diabetes and Endocrinology Hyogo Brain and Heart Center Himeji Hyogo Japan
5. Division of Internal Medicine Rokko Island Konan Hospital Kobe Hyogo Japan
6. Division of Diabetes Kobe Rosai Hospital Kobe Hyogo Japan