Institution: | 1. Department of Surgical Pathology, Laboratory and Transfusion Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan;2. Second Department of Internal Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan;3. Department of Cardiovascular Surgery, University of Occupational and Environmental Health, Kitakyushu, Japan;4. Cardiac Ultrasound Laboratory, Massachusetts General Hospital, Boston, Massachusetts |