1. Cardiovascular Center, Kansai Rosai Hospital, Amagasaki, Hyogo, Japan
2. Department of Cardiology, Kokura Memorial Hospital, Kitakyushu, Fukuoka, Japan
3. Department of Cardiology, Morinomiya Hospital, Osaka, Japan
4. Department of Cardiology, Kishiwada Tokushukai Hospital, Kishiwada, Osaka, Japan
5. Department of Cardiology, Osaka Saiseikai Nakatsu Hospital, Osaka, Japan
6. Department of Metabolic Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
7. Department of Diabetes Care Medicine, Osaka University Graduate School of Medicine, Osaka, Japan