1. Division of General Medicine, Department of Comprehensive Medicine 1, Saitama Medical Center, Jichi Medical University, Japan
2. Department of Pathology, Saitama Medical Center, Jichi Medical University, Japan
3. Division of Cardiology, Department of Comprehensive Medicine 1, Saitama Medical Center, Jichi Medical University, Japan
4. Division of Cardiology, Department of General Medicine, Saitama Citizens Medical Center, Japan
5. Department of Radiology, Saitama Medical Center, Jichi Medical University, Japan
6. Division of Metabolism, Endocrinology and Nutrition, University of Washington School of Medicine, USA