1. Nanomedical Graduate Program, Yonsei University, Seoul 120-749, Korea
2. Division of Rheumatology, Department of Internal Medicine, Institute for Immunology and Immunological Disease, Yonsei University College of Medicine, Seoul 120-752, Korea
3. Department of Pathology, Yonsei University College of Medicine, Seoul 120-752, Korea
4. Department of Physics, Yonsei University, Seoul 120-749, Korea