1. Division of Nephrology, Department of Internal Medicine, College of Medicine, Kyung Hee University, Seoul 134-727, Republic of Korea
2. Division of Cardiology, Department of Internal Medicine, College of Medicine, Kyung Hee University, Seoul 134-727, Republic of Korea
3. Department of Pathology, College of Medicine, Kyung Hee University, Seoul 134-727, Republic of Korea