1. Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-8655, Japan
2. Department of Therapeutic Strategy for Heart Failure, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-8655, Japan
3. Department of Advanced Medical Center for Heart Failure, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-8655, Japan
4. Department of Frontier Cardiovascular Science, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-8655, Japan
5. Department of Cardiovascular Medicine, Graduate School of Medicine, International University of Health and Welfare, Minato-ku, Tokyo 107-8402, Japan