1. Department of Diabetes Care Medicine, Osaka University Graduate School of Medicine
2. Department of Cardiology, Kokura Memorial Hospital
3. Department of Cardiology, Kishiwada Tokushukai Hospital
4. Cardiovascular Division, Morinomiya Hospital
5. Department of Cardiology, Osaka Saiseikai Nakatsu Hospital
6. Cardiovascular Center, Kansai Rosai Hospital