1 Department of Cardiology, Hyogo Prefectural Amagasaki General Medical Center, 2-17-77 Higashinaniwa-cho, Amagasaki, 660-8550, Japan. shinya.i210@gmail.com.
2 Department of Cardiology, Hyogo Prefectural Amagasaki General Medical Center, 2-17-77 Higashinaniwa-cho, Amagasaki, 660-8550, Japan.