1. Cardiovascular Center, Kansai Rosai Hospital, Amagasaki, Japan
2. Department of Metabolic Medicine, Osaka University Graduate School of Medicine, Suita, Japan
3. Cardiovascular Center, Takatsu General Hospital, Kawasaki, Japan
4. Department of Cardiology, Shin-Koga Hospital, Kurume, Fukuoka, Japan
5. Department of Cardiovascular Medicine, Yokohama City University Hospital, Yokohama, Japan
6. Department of Cardiovascular Medicine, Iwaki Kyoritsu General Hospital, Fukushima, Japan
7. Cardiovascular Division, Department of Internal Medicine, Morinomiya Hospital, Osaka, Japan
8. Cardiovascular Center, Fukuoka Sanno Hospital, Fukuoka, Japan
9. Division of Cardiovascular Medicine, Ohashi Medical Center, Toho University, Tokyo, Japan