1. Department of Cardiovascular Medicine The University of Tokyo Hospital Tokyo Japan
2. Department of Computational Diagnostic Radiology and Preventive Medicine The University of Tokyo Hospital Tokyo Japan
3. Department of Advanced Medical Center for Heart Failure The University of Tokyo Hospital 7‐3‐1 Hongo, Bunkyo‐ku Tokyo 113‐8655 Japan
4. Department of Therapeutic Strategy for Heart Failure The University of Tokyo Tokyo Japan