Affiliation: | 1. Department of Cardiology, Keio University School of Medicine, Tokyo, Japan 14. Division of Cardiology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan 2. University of Tokyo, Healthcare Quality Assessment, Tokyo, Japan 3. Department of Cardiology, Saiseikai Utsunomiya Hospital, Tochigi, Japan 4. Department of Cardiology, National Hospital Organization, Saitama National Hospital, Saitama, Japan 5. Department of Cardiology, Tachikawa Hospital, Tokyo, Japan 6. Department of Cardiology, Saitama City Hospital, Saitama, Japan 7. Department of Cardiology, National Hospital Organization, Tokyo Medical Center, Tokyo, Japan 8. Department of Cardiology, Saiseikai Central Hospital, Tokyo, Japan 9. Department of Cardiology, Kawasaki City Municipal Hospital, Kawasaki, Kanagawa, Japan 10. Department of Cardiology, Hiratsuka Municipal Hospital, Hiratsuka, Kanagawa, Japan 11. Department of Cardiology, Ashikaga Red Cross Hospital, Ashikaga, Tochigi, Japan 12. Center for Clinical Research, Keio University School of Medicine, Tokyo, Japan 13. Department of Cardiology, International University of Health and Welfare, Mita Hospital, Tokyo, Japan
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