1. Cardiovascular Center, Kansai Rosai Hospital
2. Department of Metabolic Medicine, Osaka University Graduate School of Medicine
3. Department of Cardiology, Keio University School of Medicine
4. Department of Cardiology, Kokura Memorial Hospital
5. Department of Cardiology, Kishiwada Tokushukai Hospital
6. Department of Cardiology, Kurashiki Central Hospital
7. Department of Cardiology, Showa University School of Medicine
8. Department of Cardiology, Aichi medical University
9. Division of Cardiovascular Medicine, Tokai University Hospital