1. Division of Cardiovascular Medicine, Hyogo Prefectural Harima–Himeji General Medical Center , 3-264 Kamiya-cho, Himeji 6708560 , Japan
2. Acute Care Division, Hyogo Prefectural Harima–Himeji General Medical Center , 3-264 Kamiya-chou, Himeji 6708560 , Japan
3. Department of Exploratory and Advanced Search in Cardiology, Kobe University Graduate School of Medicine , 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 6500017 , Japan