1 Division of Cardiovascular Medicine, Department of Internal Medicine, Toho University Faculty of Medicine, 6-11-1 Omori-Nishi, Otaku, Tokyo, Japan.
2 Division of Cardiovascular Medicine, Department of Internal Medicine, Toho University Faculty of Medicine, 6-11-1 Omori-Nishi, Otaku, Tokyo, Japan. mikesaji8@gmail.com.