1 Division of Cardiology, Department of Internal Medicine, Showa University Fujigaoka Hospital, Fujigaoka1-30, Aoba-Ku, Yokohama, Kanagawa, 227-8501, Japan.
2 Division of Cardiology, Department of Internal Medicine, Showa University Fujigaoka Hospital, Fujigaoka1-30, Aoba-Ku, Yokohama, Kanagawa, 227-8501, Japan. [email protected].