1. Division of Cardiovascular Medicine, Toho University Ohashi Medical Center
2. Division of Cardiology, National Center for Global Health and Medicine Hospital
3. Division of Cardiovascular Medicine, Toho University Faculty of Medicine
4. Division of Cardiology, Odawara Cardiovascular Hospital
5. Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center
6. Boston Scientific Corporation
7. Division of Cardiology, Mito Saiseikai General Hospital