Institution: | 1. Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan;2. Division of Cardiology, Teine Keijinkai Hospital, Sapporo, Japan;3. Division of Clinical Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan;4. Faculty of Health Sciences, Hokkaido University, Sapporo, Japan |