1. Canon Inc. , 3-30-2 Shimomaruko, Ota-ku, Tokyo 146-8501, Japan
2. Canon Medical Systems Corporation , 1385 Shimoishigami, Ohtawara, Tochigi 324-8550, Japan
3. Canon Medical Informatics, Inc. , 5850 Opus Parkway, Suite 300, Minnetonka, MN 55343
4. Division of Cardiology, Mitsui Memorial Hospital , 1 Kandaizumi-cho, Chiyoda-ku, Tokyo 101-8643, Japan
5. Department of Cardiology and Radiology, Rigshospitalet & University of Copenhagen , Blegdamsvej 9, København 2100, Denmark; Department of Clinical Medicine, Faculty of Health and Medical Sciences, Rigshospitalet & University of Copenhagen, Blegdamsvej 9, København 2100, Denmark