1. Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine , 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, Hyogo 650-0017 , Japan
2. Division of Rheumatology and Clinical Immunology, Department of Internal Medicine, Kobe University Graduate School of Medicine , Kobe , Japan
3. Department of Pathology, National Cerebral and Cardiovascular Center , Suita, Osaka , Japan